Mount Hood Railroad excursion train at the O'Dell, Oregon depot on June 14, 1990. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train, passengers

Mount Hood Railroad GP9 diesel locomotive number 88 parked with excursion train at O'Dell, Oregon, on June 14, 1990. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train, passengers

Steam tug boat "Portland" on the Willamette River in 1981. Built in 1947 the tug was the last steam powered stern wheel tug boat built in the United States and was the last in service when retired in 1981. in 1981. Photograph by Alden Raney. Other subject classes: Tug Boat-Steam.

Morrison Knudsen 8301 at Union Pacific Railroad's Albina Yard. This was built as Electromotive Division type SD45X demonstrator 4203 and later became Southern Pacific Railroad 9503. Morrison Knudsen rebuilt it as a type SD40M-2 in 1982. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Morrison Knudsen 5001 at Portland Union Station with a transfer from Guilds Lake Yard. This was built as a Union Pacific type GP9 and rebuilt by Morrison Knudsen in 1982. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Morrison Knudsen 5001 at Portland Union Station with a transfer from Guilds Lake Yard. This was built as a Union Pacific type GP9 and rebuilt by Morrison Knudsen in 1982. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Builders plate from Morrison Knudsen on rebuilt Western Pacific type GP40 3502 at Hoyt Street Yard in Portland in 1981. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Milwaukee Road Slug SG2 is in a southbound Milwaukee Road freight at Portland in 1980. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel, Train-Freight.

Milwaukee Road 5601 and three other units at Portland Union Station heading to Southern Pacific Railroad's Brooklyn Yard in 1979. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Milwaukee Road 5601 and three other units at Portland Union Station heading to Southern Pacific Railroad's Brooklyn Yard in 1979. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.