Union Pacific Railroad

General Notes:

1. UP 1400B,C-1422B,C (24 units, even numbers only) were built as UP 1442B-1465B; renumbered to UP 1400B,C-1422B,C during early 1948. The remaining six units in the order, UP 1424B,C, 1426B,C, 1428B,C, were delivered with those numbers.
2. Thirty-one units (UP 1404C, 1406B, 1406C, 1414B, 1418B, 1420B, 1420C, 1422B, 1424B, 1424C, 1426B, 1426C, 1428B, 1442B,C-1458B,C) were renumbered to UP 1500 series and assigned to the Northwestern District in 1950-1951.
3. UP 1430B,C-1440B,C (12 units, even numbers only) were equipped with steam generators for passenger service.
4. Many units were converted to F7 specifications by Union Pacific, including upgraded dynamic braking with a 48 inch fan.
5. UP 1400B,C-1428B,C were built on EMD order number E818.
6. UP 1430B,C-1458B,C were built on EMD order number E939.

General Notes:

1. UP 1451B,C-1455B,C were built for passenger service as UP 969B-978B; renumbered to UP 900B,C-904B,C in March and April 1948. Regeared for freight service and renumbered to the 1451 series in April to September 1953.
2. UP 1456B,C-1458B,C were built for passenger service as UP 905B-909C. Regeared for freight service and renumbered to UP 1456 series in April to June 1953.
3. Originally equipped with steam generators, water tanks, and high speed gear ratio for passenger service. Steam generators retired in place when units reassigned to freight service.
4. Earlier rosters of Union Pacific F-units have shown 1456B,C, 1457B,C, and 1458B,C as 1456B,C, 1458B,C, and 1460B,C. Photographic evidence has come to light showing that a 1457C did exist, therefore the assumption is made that 1457B also existed.
5. UP 1451B,C-1455B,C were built on EMD order number E845.
6. UP 1456B,C-1458B,C were built on EMD order number E1019.

General Notes:

1. UP 1464 was rebuilt from wrecked UP F3A 1504 (wrecked on 25 November 1951 at Orchard, Idaho).
2. UP 1465 was rebuilt from wrecked UP F3A 1553 (wrecked on 25 November 1951 at Orchard, Idaho).
3. UP 1466 was wrecked on 24 March 1951 at Green River, Wyoming; rebuilt in June 1952 by EMD at La Grange, Illinois (EMD rebuild order number 8013).
4. UP 1464 was built under EMD rebuild order number 8008.
5. UP 1465 was built under EMD rebuild order number 8011.
6. UP 1466-1470 were built on EMD order number 6237.
7. UP 1471-1480 were built on EMD order number 3094.

General Notes:

1. UP 1481 and 1482 were built in August 1952 as EMD F7A demonstrators for demonstration tests on Chicago & North Western and on Norfolk & Western (see photo while in N&W service in Trains magazine, December 1952, page 12); sold to UP prior to tests on N&W, reconditioned after tests and delivered to UP as new units in October 1952.
2. UP 1483 was built as EMD F7A demonstrator 5040; sold to UP in January 1953.
3. UP 1481 and 1482 were built on EMD order number 6459.
4. UP 1483 was built on EMD order number 6499.

General Notes:

1. UP 1464B rebuilt under EMD rebuild order number 8009 from wrecked UP F3B 1530B, wrecked on 25 November 1951 at Orchard, Idaho
2. UP 1464C rebuilt under EMD rebuild order number 8010 from wrecked UP F3A 1558C, wrecked on 25 November 1951 at Orchard, Idaho

General Notes:

1. UP 1466B and 1466C were wrecked on 24 March 1951 at Green River, Wyoming; rebuilt by EMD at La Grange, Illinois, in June 1952 (EMD rebuild order numbers 8014 and 8015).
2. UP 1466B,C-1474B,C were built on EMD order number 6237.

General Notes:

1. Built on EMD order number 3094.

General Notes:

1. Built as EMD F7B demonstrators for demonstration tests on Norfolk & Western; sold to UP prior to tests on N&W, reconditioned after tests and delivered to UP as new units in October 1952.
2. Built on EMD order number 6459.

General Notes:

1. Built as 911, 912, with steam generators and water tanks for passenger service; regeared and reassigned to freight service in February 1956.
2. Steam generators retired in place when reassigned to freight service.
3. Built on EMD order number 6444.

General Notes:

1. Built as 910B and 910C with steam generators and water tanks for passenger service; renumbered to 1498B and 1498C, regeared and reassigned to freight service in February 1956.
2. Steam generators retired in place when reassigned to freight service.
3. Built on EMD order number 6444.

General Notes:

1. UP 1400-1409 were originally ordered to be delivered as UP 980-989, numbered after the highest numbered E9B, number 974B. The SDP35s were UP's "modern" passenger power, delivered in August 1965, just 21 months after the delivery of the newest E9A, UP 914, in December 1963.
2. UP 1400-1409 had 379,600 pounds operating weight in freight service and 388,900 pounds operating weight in passenger service.
3. UP's SDP35s were in storage due to the nationwide recession from June 1980 until retirement in 1985, first at North Platte, Nebraska, until September 1981, then at Yermo, California.
4. UP 1409 was the last SDP35 operating on UP; removed from storage at Yermo, California, in June 1983 to protect Amtrak's California Zephyr operation across Wyoming.
5. Built on EMD order number 7824.

Notes:

1. UP 1400-1406, 1408 were sold for scrap to St. Louis Auto Shredding, East St. Louis, Illinois, in December 1985.
2. UP 1407 was traded to EMD in August 1986; scrapped by Pielet Brothers Scrap Iron & Metal, McCook, Illinois (Originally donated to Orange Empire Railway Museum, Perris, California, in October 1985; donation rescinded.)
3. UP 1409 was sold for scrap to Erman Corp., Turner, Kansas, 20 December 1985.