These are the Milwaukee Road F-unit/slug sets known as "Mr. Clean's locomotives" from the March, 1978 TRAINS magazine article. For service on the 3.6% grade out of Tacoma, WA. Kodak ISO 200 print, Leica M-3, Summicron 50mm f2
Documenting the comparative traffic of the Burlington Northern, the Milwaukee Road, and the Union Pacific between Puget Sound and the Midwest, mainly focusing on the 1970s but including other time periods as well. Also featuring Milwaukee Road freights on