Portland Terminal Railroad American Locomotive Company locomotives 46 and 45 at Guilds Lake Yard in Portland in 1979. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Portland Terminal Railroad American Locomotive Company locomotives 46 and 45 at Guilds Lake Yard in Portland in 1979. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Portland Terminal Railroad American Locomotive Company 45 and 40 at Guilds Lake Yard in 1984. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Portland Terminal Railroad American Locomotive Company 45 at Guilds Lake Yard in 1984. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Portland Terminal Railroad American Locomotive Company 45 at Guilds Lake Yard in 1984. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Portland Terminal Railroad American Locomotive Company 44 at Portland Union Station in 1979. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Portland Terminal Railroad American Locomotive Company locomotive 41 at Union Pacific Albina Yard along with two Union Pacific switchers in 1979. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Portland Terminal Railroad (PTRR) American Locomotive Company 39 and lineup of other retired PTRR American Locomotive Company's at Guilds Lake Yard along with Burlington Northern caboose in 1984. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel, Caboose-Steel.

Portland Terminal Railroad American Locomotive Company 39 at Guilds Lake Yard in 1984. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Portland Terminal Railroad (PTRR) American Locomotive Company 39 and lineup of other retired PTRR American Locomotive Company's at Guilds Lake Yard along with Burlington Northern and Southern Pacificswitchers and Burlington Northern caboose 12377 in 1984. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel, Caboose-Steel.