Union Pacific Switchers and Slugs
This page was last updated on June 19, 2002
In 1996, I wrote a book about Union Pacific's diesel switchers and yard slugs. It was comprised of four articles previously published in Diesel Era magazine, plus some additional material. The book has 116 pages; 238 black and white photos; 37 color photos; and full rosters of all of UP's EMD, Alco, Baldwin, and GE switchers, plus its yard slugs and road slugs. Click here for a listing of the articles in Diesel Era.
Below are text-only documents which were the basis for that book. The text is presented here without photos, because the book is still available from Withers Publishing Company. The book itself is organized a bit differently than the files presented below.
EMD NW2s, SW7s, SW9s, and TR5s The stories of EMD switchers on UP, from the first NW2 in 1939 to the last SW9 in 1953, including the TR5 Cow and Calf sets of 1951.
EMD/UP SW10s The story of UP's unique SW10 rebuilt switchers, updated through 1999.
EMD SW1500s, MP15DCs, and MP15ACs The stories of the former WP, MP, and MKT SW1500s, the former MP MP15DCs, and the former EMD, MKT, and Soo Line MP15AC units on UP.
Alco, Baldwin, Fairbanks-Morse, and GE Switchers The stories of Alco, Baldwin, Fairbanks-Morse, and GE switchers on UP.
Roadway (Maintenance of Way) Switchers UP's tie plant locomotives.
Yard Slugs The stories of the eight UP yard slugs, and the 23 former MP yard slugs on UP.
Road Slugs The story of UP's use of road slugs.
