SP&S diesel locomotive Number 860, an American Locomotive Company (ALCO) FA-1, leads an A-B-B-A set of locomotives westbound across the Burr Canyon trestle, undated. From the Oregon Historical Society Collection.

SP&S diesel locomotive Number 863, an American Locomotive Company (ALCO) FA-1, with an eastbound freight on Fort Wright trestle, February 1965. Photo by Robert Johnston.

SP&S an American Locomotive Company (ALCO) RS-3 diesel locomotive with a freight train east of Astoria, Oregon probably with grain for the Port of Astoria, undated.

SP&S an American Locomotive Company (ALCO) RS-3 diesel locomotive with a freight train east of Astoria, Oregon probably with grain for the Port of Astoria, undated.

SP&S an American Locomotive Company (ALCO) 'Century Series' diesel locomotives with a freight train on the Fort Wright trestle, undated. Photo by Robert Johnston.

SP&S diesel locomotive Number 303, an American Locomotive Company (ALCO) C-424, leads a freight train on the Fort Wright trestle, undated. Photo by Robert Johnston.

SP&S an American Locomotive Company (ALCO) 'Century Series' diesel locomotives with a freight train on the Fort Wright trestle, undated. Photo by Robert Johnston.

SP&S an American Locomotive Company (ALCO) 'Century Series' diesel locomotives with a freight train on the Fort Wright trestle, undated. Photo by Robert Johnston.

SP&S trestle across Doane's Lake, July 12, 1906, from the Oregon Historical Society Collection.

SP&S diesel locomotive Number 152, an EMD GP9, with a National Railway Historical Society special convention train on the Blind Slough drawbridge, September 1965.