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EMC NW2 — 1 unit
1000 horsepower; B-B trucks; 251,000 pounds operating weight

Road Number	First Number	Builder Date	Builder Number	Date Retired	Notes
UP 1000	EMC 889	Oct 1939	889	Jul 1966	1

General Notes:

a.	UP 1000 was built as Electro Motive Corp. NW2 demonstrator 889; built for demonstration service on UP; sold to UP March 1940. (During the same time period in October 1939 to March 1940, UP also tested EMC's SW1 demonstrator 911. After returning to EMC, the SW1 was sold to Great Lakes Steel in November 1940.)
b.	Built under EMC order number E308 (shared with UP 1001-1009).

Note:

1.

UP 1000 was sold to Stockton Terminal & Eastern Railroad 1000, Stockton, Calif., in July 1966; sold to WP in October 1968, rebuilt and placed in service as WP 607 in June 1969; sold to Sacramento Northern 607 in May 1973; assigned UP 1886 after December 1982 UP/WP merger but never carried that number; retired, again in September 1983 and donated to tourist operation Wasatch Mountain Railway, Heber, Utah in May 1984, delivered in early August 1984; repainted back to original UP black switcher paint scheme; sold to Nevada State Railroad Museum in February 1993, moved to Boulder, Nev., in 1994; repainted and relettered to Boulder City Southern; relettered to Nevada Southern.

EMC NW2 — 95 units
1000 horsepower; B-B trucks; 251,000 pounds operating weight

Road Number	Builder Date	Builder Number	Date Retired	Notes
UP 1001	May 1940	1000	Jul 1966	Sold to Stockton Terminal & Eastern Railroad 1001, Stockton, Calif., in July 1966; sold to WP in October 1968, rebuilt and placed in service as WP 608 in February 1969; assigned UP 1887 after December 1982 UP/WP merger but never carried that number; retired again in September 1983; donated to Feather River Rail Society in December 1984.
UP 1002	May 1940	1001	Apr 1972	Traded to EMD in April 1972.
UP 1003	May 1940	1002	Jun 1977	Sold to Chrome Crankshaft Co., Chicago, Ill., in June 1977.
UP 1004	May 1940	1003	Apr 1978	Sold to Precision National Corp., Mount Vernon, Ill., in October 1978.
UP 1005	May 1940	1004	Dec 1977	Sold to Precision National Corp., Mount Vernon, Ill., in March 1978.
UP 1006	May 1940	1005	May 1979	Sold to Bargains Galore, Vancouver, Wash., 1979; sold to Diesel Electric Service, St. Paul, Minn.
UP 1007	May 1940	1006	15 Mar 1984	Briefly renumbered to UP 7007, after retired but awaiting disposition, to avoid conflict with newly arrived former P&LE MP15s; sold for scrap to Erman Corp., Turner, Kans., in June 1985; in service as Erman-Howell in-plant switcher, with 1007 number, as late as 1990.
UP 1008	May 1940	1007	Dec 1977	Sold to Precision National Corp., Mount Vernon, Ill., in March 1978.
UP 1009	May 1940	1008	Nov 1973	Sold to Precision National Corp., Mount Vernon, Ill., in November 1973, rebuilt and sold in May 1974 to U.S. Steel LM-4, Baytown, Tex., out of service by May 1988. (U. S. Steel Baytown report in Locomotive Notes II, Number 119, page 1)
UP 1010	Jul 1940	1123	Feb 1972	Traded to EMD in November 1973.
UP 1011	Jul 1940	1124	Jul 1977	Donated to State of Utah in August 1977, preserved at Heber City, Utah.
UP 1012	Jul 1940	1125	Feb 1979	Sold for scrap to Azcon Hyman Michaels, Alton, Ill., in December 1979.
UP 1013	Jul 1940	1126	Feb 1979	Sold for scrap to Naporano Iron & Metal, Newark, N.J., 20 September 1979.
UP 1014	Jul 1940	1127	Mar 1972	Traded to EMD in March 1972.
UP 1015	Dec 1940	1244	Aug 1976	Sold to Precision National Corp., Mount Vernon, Ill., in August 1976.
UP 1016	Jan 1941	1245	May 1972	Traded to EMD in May 1972.
UP 1017	Jan 1941	1246	Oct 1979	Sold to Bargains Galore, Vancouver, Wash., 16 January 1980; sold to Diesel Electric Service, St. Paul, Minn.
UP 1018	Jan 1941	1247	Aug 1978	Sold to Chrome Crankshaft Co., Chicago, Ill., in November 1978; rebuilt at CRI&P-Silvis; sold to Jim Walter Resources 55, Birmingham, Ala., in April 1980; sold to Jefferson Warrior Railroad 55, same location.
UP 1019	Feb 1941	1248	Sep 1978	Sold to Bargains Galore, Vancouver, Wash., 16 January 1980; sold to Diesel Electric Service, St. Paul, Minn; sold to Tradewater Railway.
UP 1020	Feb 1941	1249	Mar 1973	Wrecked (crushed cab) on 21 October 1972 at Las Vegas, Nev.; scrapped by UP Omaha, Neb., in March 1973.
UP 1021	Mar 1941	1250	Jul 1976	Sold to Precision National Corp., Mount Vernon, Ill., in July 1976.
UP 1022	Mar 1941	1251	Dec 1978	Wrecked; sold to Inter-City Metals, Portland, Oreg., in February 1979; sold to Agrico 2, Williams, Okla., later to AMC 2, same location.
UP 1023	Mar 1941	1252	Jun 1977	Sold Chrome Crankshaft Co., Chicago, Ill., in June 1977, rebuilt by GE Chamblee (Atlanta), Ga.; sold to Altos Hornos de Mexico 154 in November 1977.
UP 1024	Mar 1941	1253	14 Apr 1985	Sold for scrap to Erman Corp., Turner, Kans., in June 1985; used as plant switcher EC-2 at company's metal salvage yard, in green paint scheme, later scrapped.
UP 1025	Oct 1941	1686	Sep 1979	Sold to Bargains Galore, Vancouver, Wash., in July 1980; scrapped by Joseph Simon & Sons, Tacoma, Wash., in September 1980.
UP 1026	Oct 1941	1687	Mar 1981	Sold to Bargains Galore, Vancouver, Wash., 20 July 1981, shipped to Diesel Electric Service, St. Paul, Minn.
UP 1027	May 1942	1688	Apr 1980	Sold to Bargains Galore, Vancouver, Wash., in September 1980; seen in transit at Sioux City, Iowa, in early September 1982.
UP 1028	May 1942	1689	Apr 1975	Wrecked January 1975 at Los Angeles, Calif.; scrapped by UP at Omaha, Neb.
UP 1029	May 1942	1690	Mar 1971	Sold to Precision National Corp., Mount Vernon, Ill., in March 1971; rebuilt and painted solid yellow and leased as Precision 1029 during early 1979 to Atlantic & Gulf Stevedores; sold to Agrico 182, Big Bend, Fla, in 1982.
UP 1030	May 1942	1691	1 Jun 1984	Sold for scrap to St. Louis Auto Shredding, East St. Louis, Ill., 8 January 1988.
UP 1031	Jun 1942	1692	Jun 1980	Sold to Precision National Corp., Mount Vernon, Ill., in March 1981.
UP 1032	Jul 1942	1693	Nov 1981	Sold for scrap to General Metals, Tacoma, Wash., in March 1983.
UP 1033	Jul 1942	1694	Mar 1976	Sold to Precision National Corp., Mount Vernon, Ill., in March 1976.
UP 1034	Jul 1942	1695	Feb 1977	Sold to Chrome Crankshaft Co., Chicago, Ill., in February 1977, rebuilt and sold to Tuscola & Saginaw Bay Railway 1977, "Big Chief", Vasser, Michigan in December 1977.
UP 1035	Jul 1942	1696	Mar 1976	Sold to Industrial Maintenance Service, 30 September 1976, rebuilt with close clearance cab and sold to Ford Motor Company (River Rouge Plant) 12001, Detroit, Mich.
UP 1036	May 1946	3422	Feb 1977	Sold to Chrome Crankshaft Co., Chicago, Ill., in February 1977, rebuilt by CRI&P-Silvis and sold to Canton Railroad 52, Canton (Baltimore), Md., in January 1978, painted dark blue with yellow lettering.
UP 1037	May 1946	3423	Jan 1983	Sold for scrap to Aaron Ferer & Son, Omaha, Neb., 8 January 1988.
UP 1038	May 1946	3424	Mar 1972	Traded to EMD in March 1972.
UP 1039	Jun 1946	3425	Jun 1983	Sold for scrap to St. Louis Auto Shredding, East St. Louis, Ill., 8 January 1988.
UP 1040	Jun 1946	3426	1 Jun 1984	Sold for scrap to Aaron Ferer & Son, Omaha, Neb., 8 January 1988.
UP 1041	Jun 1946	3427	May 1979	Sold to Peaker Services, Brighton, Mich., in January 1980.
UP 1042	Jul 1946	3428	15 Mar 1984	Sold for scrap to Erman Corp., Turner, Kans., in August 1985.
UP 1043	Jul 1946	3429	Mar 1985	Sold to Pacific States Cast Iron Pipe Co., Provo, Utah, 10 March 1985.
UP 1044	Jul 1946	3430	Feb 1981	Sold to Bargains Galore, Vancouver, Wash., 28 April 1981; scrapped by Joseph Simon & Sons, Tacoma, Wash.
UP 1045	Jul 1946	3431	Jul 1976	Sold to Precision National Corp., Mount Vernon, Ill., in July 1976, rebuilt and sold to Monongahela Connecting Railroad 432, Pittsburgh, Pa., in June 1977.
UP 1046	Jul 1946	3432	Mar 1972	Traded to EMD in March 1972.
UP 1047	Jul 1946	3433	Sep 1978	Sold to Precision National Corp., Mount Vernon, Ill., in February 1980.
UP 1048	Jul 1946	3434	Oct 1974	Sold to Pacific Fruit Express, Roseville, Calif., 1048 in October 1974; PFE's Roseville facility shut down on 31 December 1979; PFE 1048 transferred to the PFE facility at Tucson, Ariz., in February 1980; retired in 1998 and sold to Commanche Crossing Historic Railroad, Strasburg, Colo., in December 1998.
UP 1049	Jul 1946	3435	23 Nov 1982	Sold for scrap to Durbano, Ogden, Utah, 1 October 1984.
UP 1050	Jul 1946	3436	Oct 1979	Scrapped by UP at Omaha, Neb., in July 1980.
UP 1051	Feb 1947	4697	23 Nov 1982	Sold for scrap to Erman Corp., Turner, Kans., in March 1983.
UP 1052	Feb 1947	4698	Mar 1978	Sold to Precision National Corp., Mount Vernon, Ill., in March 1978; sold to Montgomery Maintenance & Heavy Equipment 791; leased to Jackson County Grain Terminal, Pascagoula, Miss., in June 1980.
UP 1053	Feb 1947	4699	May 1972	Sold to Industrial Maintenance Services, Hammond, Ind., in May 1972; rebuilt and sold to Elgin, Joliet & Eastern 448, Joliet, Ill., in November 1972.
UP 1054	Feb 1947	4700	Apr 1982	Sold for scrap to Erman Corp., Turner, Kans., in September 1982.
UP 1055	Feb 1947	4701	1 Jun 1984	Sold for scrap to St. Louis Auto Shredding, East St. Louis, Ill., 8 January 1988.
UP 1056	Feb 1947	4702	Sep 1978	Sold to Chrome Crankshaft Co., Chicago, Ill., in November 1978.
UP 1057	Mar 1947	4703	Mar 1972	Traded to EMD in March 1972.
UP 1058	Mar 1947	4704	Jun 1977	Sold to Chrome Crankshaft Co., Chicago, Ill., in June 1977; rebuilt and sold to U.S. Steel Fairless Works 30, Fairless Hills, Pa., in July 1978.
UP 1059	Mar 1947	4705	Feb 1981	Sold to Bargains Galore, Vancouver, Wash., 28 April 1981; scrapped by Joseph Simon & Sons, Tacoma, Wash.
UP 1060	Mar 1947	4706	Mar 1972	Traded to EMD in March 1972.
UP 1061	Mar 1947	4707	1 Jun 1984	Sold for scrap to St. Louis Auto Shredding, East St. Louis, Ill., 8 January 1988.
UP 1062	Apr 1947	4708	Nov 1984	Sold for scrap to St. Louis Auto Shredding, East St. Louis, Ill., 8 January 1988.
UP 1063	May 1947	4709	Jan 1980	Sold to Precision National Corp., Mount Vernon, Ill., in September 1980.
UP 1064	May 1947	4710	Dec 1980	Sold to Precision National Corp., Mount Vernon, Ill., 27 March 1981.
UP 1065	May 1947	4711	Dec 1977	Sold to Precision National Corp., Mount Vernon, Ill., in May 1978.
UP 1066	May 1947	4712	Jul 1976	Sold to Precision National Corp., Mount Vernon, Ill., in July 1976.
UP 1067	May 1947	4713	May 1972	Sold to Industrial Maintenance Services, Hammond, Ind., in May 1972; rebuilt and sold to Elgin, Joliet & Eastern 449, Joliet, Ill., in June 1973.
UP 1068	May 1947	4714	Apr 1978	Sold to Chrome Crankshaft Co., Chicago, Ill., in November 1978; rebuilt by CRI&P-Silvis in March 1980; sold to Jim Walter Resources 56, Birmingham, Ala., in April 1980; sold to Jefferson Warrior Railroad 56, same location.
UP 1069	Jun 1947	4715	Apr 1978	Sold to Chrome Crankshaft Co., Chicago, Ill., in November 1978.
UP 1070	Jun 1947	4716	Feb 1972	Traded to EMD in February 1972.
UP 1071	Jun 1947	4717	Jun 1977	Sold Chrome Crankshaft Co., Chicago, Ill., in June 1977; rebuilt by GE-Chamblee (Atlanta), Ga.; sold to Altos Hornos de Mexico 155 in November 1977.
UP 1072	Jun 1947	4718	Dec 1977	Sold to Precision National Corp., Mount Vernon, Ill., in March 1978.
UP 1073	Jun 1947	4719	Mar 1972	Traded to EMD in March 1972.
UP 1074	Jun 1947	4720	Dec 1977	Sold to Precision National Corp., Mount Vernon, Ill., in March 1978.
UP 1075	Jun 1947	4721	Feb 1979	Sold to Peaker Services, Brighton, Mich., 4 December 1979; rebuilt to Peaker number 1; sold to Marinette, Tomahawk & Western Railroad 81, Tomahawk, Wis.; sold to Nekoosa Paper Products 26, Port Edwards, Wis.
UP 1076	Mar 1948	6336	Dec 1979	Sold to Precision National Corp., Mount Vernon, Ill., 2 February 1981.
UP 1077	Mar 1948	6337	Jan 1983	Sold to Bargains Galore, Vancouver, Wash., 1 October 1984; scrapped by Joseph Simon & Sons, Tacoma, Wash., in December 1984.
UP 1078	Mar 1948	6338	Sep 1979	Sold to Precision National Corp., Mount Vernon, Ill., in September 1980.
UP 1079	Apr 1948	6339	Feb 1972	Traded to EMD in February 1972.
UP 1080	Apr 1948	6340	14 Apr 1985	Sold for scrap to Erman Corp., Turner, Kans., in August 1985.
UP 1081	Apr 1948	6341	Feb 1985	Sold for scrap to Southwest Railroad Car Parts, Longview, Tex., 8 January 1988.
UP 1082	Apr 1948	6342	Apr 1980	Sold for scrap to Erman Corp., Turner, Kans., in May 1980.
UP 1083	May 1948	6343	Jun 1981	Sold for scrap to Azcon Hyman Michaels, Alton, Ill., 9 October 1981.
UP 1084	May 1948	6344	Mar 1972	Traded to EMD in March 1972.
UP 1085	May 1948	6345	Feb 1985	Sold for scrap to St. Louis Auto Shredding, East St. Louis, Ill., 8 January 1988.
UP 1086	Jun 1948	6346	14 Apr 1985	Sold for scrap to St. Louis Auto Shredding, East St. Louis, Ill., 8 January 1988.
UP 1087	Jun 1948	6347	Oct 1979	Sold to Bargains Galore, Vancouver, Wash., 30 January 1981; sold to Rail Car Corp., Colorado Springs, Colo.; lettered for Cadillac & Lake City; sold to Rawhide Shortline 1087, Rawhide, Colo., in July 1982.
UP 1088	Jul 1948	6348	Dec 1977	Sold to Precision National Corp., Mount Vernon, Ill., in March 1978.
UP 1089	Jul 1948	6349	Mar 1976	Sold to Precision National Corp., Mount Vernon, Ill., in March 1976.
UP 1090	Jul 1948	6350	6 Mar 1980	Sold to Illinois Central Gulf Railroad in September 1980.
UP 1091	Aug 1948	6351	1 Jun 1984	Sold for scrap to Southwest Railroad Car Parts, Longview, Tex., 8 January 1988.
UP 1092	Aug 1948	6352	14 Apr 1985	Sold for scrap to Erman Corp., Turner, Kans., in August 1985.
UP 1093	Sep 1948	6353	May 1979	Sold for scrap to Azcon Hyman Michaels, Alton, Ill., in August 1980.
UP 1094	Sep 1948	6354	Dec 1981	Sold to Bargains Galore, Vancouver, Wash., 27 February 1986; scrapped by General Metals, Tacoma, Wash., in May 1986.
UP 1095	Sep 1948	6355	14 Apr 1985	Sold for scrap to Erman Corp., Turner, Kans., in August 1985.

General Notes:

a.	UP 1025-1035 were part of an order for 25 units, to be numbered UP 1025-1049; only 11 units were delivered; remainder of order (UP 1036-1049, 14 units) was canceled by the War Production Board in July 1942. UP numbers 1036-1049 were later used on additional NW2s.
b.	UP 1036-1054 were the second units to carry these numbers; the same numbers were first carried by Alco S-2s, 1036-1054, which were renumbered to the 1100-series in 1945.
c.	UP 1055-1060 were the second group of units to carry these numbers; the same numbers were first carried by Baldwin VO-1000s, which were renumbered to the 1200-series in 1945.
d.	UP 1001-1075 were delivered in UP's early black switcher paint scheme, repainted to yellow in late 1947.
e.	UP 1006-1011, 1016, 1018-1021, 1027-1029, 1039, 1040, 1046-1049, 1052-1054, 1056-1058, 1060-1063, 1070, 1081, and 1085 (33 units) were assigned to the South-Central District (Salt Lake City, Las Vegas, and Los Angeles) during early 1953. During February and March 1953 each unit had the D.S. (Diesel Switch) prefix removed from its 1000-series number.
f.	UP 1088-1095 had 253,000 pounds operating weight and 65:12 gear ratio; several were later changed to 62:15 gear ratio.
g.	UP 1001-1009 were built under EMC order number E308 (shared with 1000).
h.	UP 1010-1014 were built on EMD order number E328.
i.	UP 1015-1024 were built on EMD order number E371.
j.	UP 1025-1035 were built on EMD order number E476.
k.	UP 1036-1050 were built on EMD order number E683.
l.	UP 1051-1075 were built on EMD order number E820.
m.	UP 1076-1095 were built on EMD order number E998.

Alco S-2 — 19 units
1000 horsepower; B-B trucks; 230,000 pounds operating weight

Road Number	Builder Date	Builder Number	Notes
UP 1036	Sep 1943	70228	Renumbered to UP 1100 in May 1945.
UP 1037	Sep 1943	70229	Renumbered to UP 1101 in May 1945.
UP 1038	Sep 1943	70230	Renumbered to UP 1102 in May 1945.
UP 1039	Oct 1943	70231	Renumbered to UP 1103 in May 1945.
UP 1040	Nov 1943	71274	Renumbered to UP 1104 in June 1945.
UP 1041	Nov 1943	71275	Renumbered to UP 1105 in May 1945.
UP 1042	Nov 1943	71276	Renumbered to UP 1106 in May 1945.
UP 1043	Nov 1943	71277	Renumbered to UP 1107 in May 1945.
UP 1044	Dec 1943	71278	Renumbered to UP 1108 in June 1945.
UP 1045	Dec 1943	71279	Renumbered to UP 1109 in May 1945.
UP 1046	Dec 1943	71280	Renumbered to UP 1110 in May 1945.
UP 1047	Dec 1943	71281	Renumbered to UP 1111 in May 1945.
UP 1048	Dec 1943	71282	Renumbered to UP 1112 in June 1945.
UP 1049	Jan 1944	71998	Renumbered to UP 1113 in June 1945.
UP 1050	Jan 1944	71999	Renumbered to UP 1114 in June 1945.
UP 1051	Jan 1944	72000	Renumbered to UP 1115 in June 1945.
UP 1052	Jan 1944	72001	Renumbered to UP 1116 in May 1945.
UP 1053	Feb 1944	72013	Renumbered to UP 1117 in May 1945.
UP 1054	Feb 1944	72014	Renumbered to UP 1118 in May 1945.

General Notes:

a.	UP 1036-1054 were ordered and delivered to UP in lieu of additional EMD NW2 switchers. UP had ordered 25 NW2s in August 1941. On 7 July 1942, after 11 of the 25 units were delivered, the remaining 14 units were canceled by the War Production Board. UP's requirement for additional yard switchers was filled a year later with these 19 Alco S-2s.
b.	UP 1036-1054 delivered in UP's black switcher paint scheme, repainted to yellow in late 1947, after being renumbered to the 1100-series.
c.	UP 1036-1039 had Alco order number S-1883.
d.	UP 1040-1048 had Alco order number S-1914.
e.	UP 1049-1054 had Alco order number S-1930.

BLW VO-1000 — 6 units
1000 horsepower; B-B trucks; 240,700 pounds operating weight

Road Number	Builder Date	Builder Number	Date In Service	Notes
UP 1055	Feb 1944	70148	25 Feb 1944	Renumbered to UP 1205 in May 1945.
UP 1056	Feb 1944	70147	25 Feb 1944	Renumbered to UP 1204 in May 1945.
UP 1057	Oct 1943	69777	26 Oct 1943	Renumbered to UP 1203 in May 1945.
UP 1058	Oct 1943	69776	26 Oct 1943	Renumbered to UP 1202 in May 1945.
UP 1059	Oct 1943	69775	26 Oct 1943	Renumbered to UP 1201 in May 1945.
UP 1060	Oct 1943	69672	15 Oct 1943	Renumbered to UP 1200 in May 1945.

General Notes:

a.	UP 1055-1060 were numbered in reverse order of their builder's number sequence for unknown reasons; renumbered to UP 1200-1205 in builder's number sequence in May 1945.
b.	UP 1055-1060 delivered in UP's black switcher paint scheme, repainted to yellow in late 1947, after being renumbered to the 1200-series.
c.	UP 1055, 1056 had Baldwin order number 43506-A.
d.	UP 1057-1059 had Baldwin order number 43502-B.
e.	UP 1060 had Baldwin order number 42530-J.

EMD MP15DC — 15 units
1500 horsepower; B-B trucks; 246,000 pounds operating weight

Road Number	Previous Number	Builder Date	Builder Number	Date To 1000 Series	1300 Series Number	Date To 1300 Series
UP 1000	UP 1275	Jun 1974	73694-4	Jun 1985	UP 1300	3 Jun 1987
UP 1001	UP 1276	Jun 1974	73694-3	Jun 1985	UP 1301	26 May 1987
UP 1002	UP 1277	Jun 1974	73694-2	May 1985	UP 1302	9 Jun 1987
UP 1003	UP 1278	Jul 1974	73694-10	May 1985	UP 1303	18 Jun 1987
UP 1004	UP 1279	Jul 1974	73694-8	Jun 1985	UP 1304	16 Jun 1987
UP 1005	UP 1280	Jul 1974	73694-7	Jun 1985	UP 1305	8 Sep 1987
UP 1006	UP 1281	Jun 1974	73694-6	May 1985	UP 1306	4 Sep 1987
UP 1007	UP 1282	Jun 1974	73694-1	Jun 1985	UP 1307	4 Aug 1987
UP 1008	UP 1283	Jul 1974	73694-5	Jun 1985	UP 1308	15 Sep 1987
UP 1009	UP 1284	Jul 1974	73694-9	May 1985	UP 1309	1 Oct 1987
UP 1010	P&LE 1584	May 1975	74668-1	May 1985	UP 1310	2 Nov 1987
UP 1011	P&LE 1587	May 1975	74668-4	May 1985	UP 1311	14 Dec 1987
UP 1012	P&LE 1588	May 1975	74668-5	Jun 1985	UP 1312	21 Sep 1987
UP 1013	P&LE 1596	May 1975	74668-13	Jun 1985	UP 1313	12 Nov 1987
UP 1014	P&LE 1598	May 1975	74668-15	May 1985	UP 1314	2 Dec 1987

General Notes:

a.	UP 1000-1009 were built as Pittsburgh & Lake Erie (P&LE) units; purchased second-hand by UP in December 1984; delivered in mid February 1985, renumbered to UP 1275-1284 series in February and March 1985, renumbered to UP 1000-1009 series in May and June 1985.
b.	UP 1010-1014 were built as Pittsburgh & Lake Erie (P&LE) units; purchased second-hand by UP in December 1984; delivered in late April 1985; numbered UP 1010-1014 in May and June 1985.
c.	Renumbered to UP 1300-1314 series in May to December 1987 (UP 1001 was the first, completed as UP 1301 on 26 May 1987, UP 1011 was the last, completed as UP 1311 on 14 December 1987).
d.	UP added side handrails for improved safety.
e.	Individual unit histories:

	Road Number	First Number	Second Number	Third Number	Date To 1275 Series	Date To UP Paint
	UP 1000	P&LE 1577	UP 1275		Feb 1985
	UP 1001	P&LE 1576	UP 1276		Feb 1985
	UP 1002	P&LE 1575	UP 1277		Feb 1985
	UP 1003	P&LE 1583	UP 1278		Feb 1985	20 Apr 1985
	UP 1004	P&LE 1581	UP 1279		Feb 1985
	UP 1005	P&LE 1580	UP 1280		Feb 1985
	UP 1006	P&LE 1579	UP 1281		Feb 1985
	UP 1007	P&LE 1574	UP 1574	UP 1282	19 Mar 1985
	UP 1008	P&LE 1578	UP 1283		Feb 1985
	UP 1009	P&LE 1582	UP 1284		Feb 1985	18 Apr 1985
	UP 1010	P&LE 1584
	UP 1011	P&LE 1587
	UP 1012	P&LE 1588
	UP 1013	P&LE 1596
	UP 1014	P&LE 1598

Alco S-2 — 54 units
1000 horsepower; B-B trucks; 230,000 pounds operating weight

Road Number	First Number	Builder Date	Builder Number	Date Retired	Notes
UP 1100	UP 1036	Sep 1943	70228	Apr 1968	Traded to EMD in June 1968.
UP 1101	UP 1037	Sep 1943	70229	Mar 1969	Traded to EMD in March 1969.
UP 1102	UP 1038	Sep 1943	70230	Oct 1971	Traded to EMD in October 1971.
UP 1103	UP 1039	Oct 1943	70231	Jan 1968	Traded to EMD in April 1968.
UP 1104	UP 1040	Nov 1943	71274	Mar 1969	Traded to EMD in March 1969.
UP 1105	UP 1041	Nov 1943	71275	Apr 1968	Traded to EMD in April 1968.
UP 1106	UP 1042	Nov 1943	71276	Mar 1969	Traded to EMD in April 1969.
UP 1107	UP 1043	Nov 1943	71277	Feb 1968	Traded to EMD in April 1968.
UP 1108	UP 1044	Dec 1943	71278	Feb 1968	Traded to EMD in April 1968.
UP 1109	UP 1045	Dec 1943	71279	Feb 1970	Traded to EMD in February 1970.
UP 1110	UP 1046	Dec 1943	71280	Apr 1968	Traded to EMD in April 1968.
UP 1111	UP 1047	Dec 1943	71281	Feb 1969	Traded to EMD in February 1969.
UP 1112	UP 1048	Dec 1943	71282	Nov 1971	Traded to EMD in November 1971.
UP 1113	UP 1049	Jan 1944	71998	Dec 1969	Traded to EMD in December 1969.
UP 1114	UP 1050	Jan 1944	71999	May 1968	Traded to EMD in May 1968.
UP 1115	UP 1051	Jan 1944	72000	Mar 1968	Traded to EMD in May 1968.
UP 1116	UP 1052	Jan 1944	72001	Jul 1970	Traded to EMD in July 1970.
UP 1117	UP 1053	Feb 1944	72013	Mar 1969	Traded to EMD in March 1969.
UP 1118	UP 1054	Feb 1944	72014	Jan 1968	Traded to EMD in April 1968.
UP 1119		Jun 1945	73369	Apr 1969	Traded to EMD in April 1969.
UP 1120		Jun 1945	73370	Dec 1971	Traded to EMD in December 1971.
UP 1121		Jun 1945	73371	Sep 1969	Traded to EMD in September 1969.
UP 1122		Jun 1945	73372	Sep 1969	Traded to EMD in September 1969.
UP 1123		Jun 1945	73373	Nov 1971	Traded to EMD in November 1971.
UP 1124		Jun 1945	73374	Sep 1969	Traded to EMD in September 1969.
UP 1125		Jun 1945	73390	Aug 1969	Traded to EMD in August 1969.
UP 1126		Jun 1945	73391	Oct 1969	Traded to EMD in October 1969.
UP 1127		Jul 1945	73392	Oct 1971	Traded to EMD in October 1971.
UP 1128		Jul 1945	73393	Mar 1968	Traded to EMD in March 1968.
UP 1129		Aug 1945	73612	Aug 1969	Traded to EMD in August 1969.
UP 1130		Aug 1945	73613	Jul 1969	Traded to EMD in October 1969.
UP 1131		Aug 1945	73614	Nov 1969	Traded to EMD in February 1970.
UP 1132		Aug 1945	73615	Feb 1969	Traded to EMD in February 1969.
UP 1133		Aug 1945	73616	Feb 1968	Traded to EMD in April 1968.
UP 1134		Oct 1945	74337	Oct 1969	Traded to EMD in November 1969.
UP 1135		Oct 1945	74338	Oct 1971	Traded to EMD in October 1971.
UP 1136		Oct 1945	74339	Jan 1968	Traded to EMD in March 1968.
UP 1137		Oct 1945	74340	Feb 1971	Traded to EMD in February 1971.
UP 1138		Oct 1945	74341	Aug 1970	Traded to EMD in August 1970.
UP 1139		Oct 1945	74342	Mar 1968	Traded to EMD in April 1968.
UP 1140		Nov 1945	74439	Aug 1969	Traded to EMD in October 1969.
UP 1141		Nov 1945	74440	Oct 1971	Traded to EMD in October 1971.
UP 1142		Nov 1945	74441	Mar 1969	Traded to EMD in March 1969.
UP 1143		Nov 1945	74442	Nov 1971	Traded to EMD in November 1971.
UP 1144		Dec 1945	74443	Oct 1971	Traded to EMD in October 1971.
UP 1145		Dec 1945	74444	Nov 1969	Traded to EMD in March 1970.
UP 1146		Dec 1945	74445	Feb 1969	Traded to EMD in February 1969.
UP 1147		Dec 1945	74446	Jun 1968	Traded to EMD in June 1968.
UP 1148		Dec 1945	74447	Mar 1969	Traded to EMD in March 1969.
UP 1149		Dec 1945	74448	Jun 1970	Traded to EMD in June 1970.
UP 1150		Dec 1945	74449	May 1968	Traded to EMD in June 1968.
UP 1151		Dec 1945	74450	Jun 1969	Traded to EMD in June 1969.
UP 1152		Jan 1946	74451	May 1969	Traded to EMD in May 1969.
UP 1153		Jan 1946	74452	Apr 1968	Traded to EMD in April 1968.

General Notes:

a.	UP 1100-1118 built as 1036-1054; Renumbered to UP 1100-1153 in May and June 1945 to make room for additional EMD NW2s.
b.	UP 1100-1118, as UP 1036-1054, were delivered in UP's early black switcher paint scheme, repainted to yellow in late 1947.
c.	UP 1100, as 1036, was delivered to UP on 22 September 1943.
d.	UP 1126 and 1128 were equipped for multiple unit operation.
e.	UP 1105, 1112, 1114, 1119, 1122, 1126, 1147, 1148, and 1153 (nine units) were assigned to the South-Central District (Salt Lake City, Las Vegas, and Los Angeles) during early 1953. During February and March 1953 each unit had the D.S. (Diesel Switch) prefix removed from its 1100-series number.
f.	Alco order numbers:

	Road Number	Alco Order Number
	UP 1100-1103	S-1883
	UP 1104-1112	S-1914
	UP 1113-1118	S-1930
	UP 1119-1128	S-1965
	UP 1129-1133	S-1970
	UP 1134-1139	S-3002
	UP 1140-1153	S-3005

Alco S-4 — 45 units
1000 horsepower; B-B trucks; 247,700 pounds operating weight

Road Number	Builder Date	Builder Number	Date Retired	Notes
UP 1154	Jun 1955	81336	Nov 1971	Traded to EMD in November 1971.
UP 1155	Jun 1955	81337	Dec 1971	Traded to EMD in December 1971.
UP 1156	Jun 1955	81338	Sep 1971	Traded to EMD in September 1971.
UP 1157	Jun 1955	81339	Aug 1970	Traded to EMD in August 1970.
UP 1158	Jun 1955	81340	Feb 1970	Traded to EMD in March 1970.
UP 1159	Jun 1955	81341	Jul 1970	Traded to EMD in August 1970.
UP 1160	Jun 1955	81342	Jun 1970	Traded to EMD in June 1970.
UP 1161	Jun 1955	81343	Nov 1971	Traded to EMD in November 1971.
UP 1162	Jun 1955	81344	Oct 1971	Traded to EMD in October 1971.
UP 1163	Jun 1955	81385	Jun 1970	Traded to EMD in June 1970.
UP 1164	Jun 1955	81386	Aug 1970	Traded to EMD in August 1970.
UP 1165	Jun 1955	81387	Aug 1970	Traded to EMD in August 1970.
UP 1166	Jun 1955	81388	Mar 1972	Sold to Chrome Crankshaft Co., Chicago, Ill., in March 1972; sold to Stauffer Chemical 1166, Silver Bow, Mont., in May 1972; sold to Scoular Grain Co.
UP 1167	Jul 1955	81389	Jul 1970	Traded to EMD in July 1970.
UP 1168	Jul 1955	81390	Aug 1970	Traded to EMD in August 1970.
UP 1169	Jul 1955	81391	Oct 1971	Traded to EMD in November 1971.
UP 1170	Jul 1955	81392	Jan 1972	Traded to EMD in January 1972.
UP 1171	Jul 1955	81393	Mar 1972	Sold to Chrome Crankshaft Co., Chicago, Ill., in March 1972; sold to Yreka Western Railroad 1171, Yreka, Calif., in July 1972.
UP 1172	Jul 1955	81394	Mar 1972	Sold to Chrome Crankshaft Co., Chicago, Ill., in March 1972; sold to Yreka Western Railroad 1172, Yreka, Calif., in July 1972; sold to Pend Oreille Valley Railroad 101, Newport, Wash., in November 1979.
UP 1173	Jul 1955	81395	Jun 1970	Traded to EMD in June 1970.
UP 1174	Nov 1955	81443	Oct 1971	Traded to EMD in November 1971.
UP 1175	Nov 1955	81444	Jan 1972	Traded to EMD in January 1972.
UP 1176	Nov 1955	81445	Aug 1970	Traded to EMD in August 1971.
UP 1177	Nov 1955	81446	Oct 1971	Traded to EMD in October 1971.
UP 1178	Dec 1955	81447	Feb 1972	Traded to EMD in February 1972.
UP 1179	Dec 1955	81448	Oct 1971	Traded to EMD in October 1971.
UP 1180	Dec 1955	81449	Jun 1970	Traded to EMD in June 1970.
UP 1181	Dec 1955	81450	Jan 1972	Traded to EMD in January 1972.
UP 1182	Dec 1955	81451	Feb 1971	Traded to EMD in February 1971.
UP 1183	Dec 1955	81452	Oct 1971	Traded to EMD in October 1971.
UP 1184	Dec 1955	81453	Feb 1970	Traded to EMD in February 1970.
UP 1185	Dec 1955	81454	Aug 1970	Traded to EMD in August 1970.
UP 1186	Dec 1955	81455	Jul 1970	Traded to EMD in July 1970.
UP 1187	Dec 1955	81825	Oct 1971	Traded to EMD in October 1971.
UP 1188	Dec 1955	81826	Feb 1972	Traded to EMD in February 1972
UP 1189	Jan 1956	81827	Feb 1971	Traded to EMD in February 1971.
UP 1190	Jan 1956	81828	May 1972	Traded to EMD in May 1972.
UP 1191	Jan 1956	81829	Oct 1971	Traded to EMD in October 1971.
UP 1192	Jan 1956	81830	Oct 1971	Traded to EMD in October 1971.
UP 1193	Jan 1956	81831	Nov 1971	Traded to EMD in November 1971.
UP 1194	Feb 1956	81832	Dec 1971	Traded to EMD in December 1971.
UP 1195	Mar 1956	81833	Sep 1971	Traded to EMD in September 1971.
UP 1196	Mar 1956	81834	Jan 1970	Traded to EMD in February 1970.
UP 1197	Mar 1956	81835	Jun 1970	Traded to EMD in June 1970.
UP 1198	Mar 1956	81836	Oct 1971	Traded to EMD in October 1971.

General Notes:

a.	UP 1154-1198 were equipped for multiple unit operation.
b.	UP 1195 was equipped with snowplow pilot and number boards for branchline service; used on the Kearney (Nebraska) Branch between December 1958 and June 1970.
c.	UP 1184, 1185, 1191, and 1194 (four units) were assigned to the South-Central District (Salt Lake City, Las Vegas, and Los Angeles) during early 1953. During February and March 1953 each unit had the D.S. (Diesel Switch) prefix removed from its 1100-series number.
d.	Alco order numbers:

	Road Number	Alco Order Number
	UP 1154-1162	S-3244
	UP 1163-1173	S-3248
	UP 1174-1186	S-3251
	UP 1187-1198	S-3263

Alco RSC-2 — 11 units
1500 horsepower; A1A-A1A trucks; operating weight: (see general note, below)

Road Number	First Number	Builder Date	Builder Number	Notes
UP 1180		Mar 1948	75693	Renumbered to UP 1280 in October 1955.
UP 1181		Apr 1948	75936	Renumbered to UP 1281 in October 1955.
UP 1182		Apr 1948	75937	Renumbered to UP 1282 in October 1955.
UP 1183		Apr 1948	75938	Renumbered to UP 1283 in October 1955.
UP 1184		Apr 1948	75939	Renumbered to UP 1284 in October 1955.
UP 1185		Apr 1948	75940	Renumbered to UP 1285 in October 1955.
UP 1106		Apr 1948	75941	Renumbered to UP 1286 in October 1955.
UP 1187		Apr 1948	75947	Renumbered to UP 1287 in October 1955.
UP 1188		Apr 1948	75948	Renumbered to UP 1288 in October 1955.
UP 1189		Apr 1948	75949	Renumbered to UP 1289 in October 1955.
UP 1190	Alco 1190	Feb 1947	75136	Renumbered to UP 1290 in October 1955.

General Notes:

a.	UP 1190 was built as Alco demonstrator 1190, in UP yellow and gray paint; sold to UP on 19 March 1948.
b.	UP 1180-1189 were built with 235,000 pounds operating weight and 156,600 pounds weight on drivers.
c.	UP 1182, 1183, 1186, 1187, 1188, and 1189 were re-ballasted to 274,000 pounds operating weight and 193,900 pounds weight on drivers, which included an additional 800 gallon fuel tank.
d.	UP 1184 and 1185 were re-ballasted to 264,400 pounds operating weight and 188,100 pounds weight on drivers.
e.	UP 1181, 1182, 1187, and 1189 were equipped for multiple unit operation.
f.	UP 1185 was used briefly in helper service on Cajon Pass in Southern California during 1949.
g.	UP 1180 had Alco order number S-3053 (shared with UP RS-2s 1193, 1194)
h.	UP 1181-1189 had Alco order number S-3063.
i.	UP 1190 had Alco order nnumber S-3024.

Alco RS-2 — 5 units
1500 horsepower; B-B trucks; 250,000 pounds operating weight

Road Number	Builder Date	Builder Number	Notes
UP 1191	Feb 1947	75266	Renumbered to UP 1291 in October 1955.
UP 1192	Feb 1948	75572	Renumbered to UP 1292 in October 1955.
UP 1193	Feb 1948	75691	Renumbered to UP 1293 in October 1955.
UP 1194	Feb 1948	75692	Renumbered to UP 1294 in October 1955.
UP 1195	Jan 1949	76240	Renumbered to UP 1295 in October 1955.

General Notes:

a.	Alco order numbers:

	Road Number	Alco Order Number
	UP 1191	S-3029
	UP 1192	S-3046
	UP 1193, 1194	S-3053 (shared with UP RSC-2 1180)
	UP 1195	S-3074

***

This work is copyright 2000-2011 by Don Strack, but licensed under a Creative Commons License.