Portland Terminal Railroad Company Alco S-2 diesel locomotive number 37, built in 1943, parked at Portland, Oregon, on May 30, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive .

Portland Terminal Railroad Company Alco S-2 diesel locomotive number 36, built in 1943, parked at Portland, Oregon, on May 30, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive .

Portland Terminal Railroad Company Alco S-1 diesel locomotive number 33. built in 1942, parked at Portland, Oregon, in 1975 or 1976. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive .

Portland Railway, Light and Power Company streetcar 300 assigned to daily "Seeing Portland" service at Portland, Oregon, circa 1910. J.M. Fredrickson collection. Other Subject Classes: streetcar

Portland Railway, Light and Power Company streetcar 300 assigned to daily "Seeing Portland" service at Portland, Oregon, circa 1910. J.M. Fredrickson collection. Other Subject Classes: streetcar

Portland Railway Light and Power Company streetcar 1062 at Portland, Oregon, circa 1925. J.M. Fredrickson collection. Other Subject Classes: streetcar

Portland Railroad and Terminal steeple cab electric locomotives 1413, 1408, and 1406 at Portland Traction Company in 1959. Photograph by Alden Raney. Other subject classes: Locomotive-Electric.

Portland Railroad and Terminal SW1 100 at Portland Traction Company in 1959. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Portland Railroad and Terminal SW1 100 at Portland Traction Company in 1959. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Portland Railroad and Terminal Company SW1 200 with a transfer from Union Pacific Railroad's Albina Yard to Portland Traction's East Side Yard in 1978. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.