A Milwaukee Road boxcab locomotive set along the Yakima River in Washington, undated.

A Milwaukee Road boxcab locomotive set along the Yakima River in Washington, undated. A boxcab locomotive set leads a freight train along the Yakima River.

Amtrak electric locomotive 910 at Bowie, Maryland on July 5, 1982. Photo shows Bowie tower and steel bridge. Photo by J.M. Fredrickson. Other Subject Classes: electric locomotive, passenger train

Amtrak electric locomotive 910 at Bowie, Maryland on July 5, 1982. Photo by J.M. Fredrickson. Other Subject Classes: electric locomotive, passenger train

Amtrak electric locomotive 914 at Bowie, Maryland on July 5, 1982. Photo by J.M. Fredrickson. Other Subject Classes: electric locomotive, passenger train

Amtrak electric locomotive 916, an electric box cab at Washington, District of Columbia on July 5, 1982. Photo by J.M. Fredrickson. Other Subject Classes: electric locomotive, passenger train

Amtrak electric locomotive 925, an electric box cab at Washington, District of Columbia on July 5, 1982. Photo by J.M. Fredrickson. Other Subject Classes: electric locomotive, passenger train

Amtrak electric locomotive 929 at Washington, District of Columbia on July 5, 1982. Amtrak 929 leads Amtrak train at Washington DC in 1982. Photo by J.M. Fredrickson. Other Subject Classes: electric locomotive, passenger train

Amtrak electric locomotive 930 at Bowie, Maryland on July 5, 1982. Bowie tower and signal bridge are visible in the photo. Photo by J.M. Fredrickson. Other Subject Classes: electric locomotive, passenger train

Amtrak electric locomotive 935 at Bowie, Maryland on July 5, 1982. Bowie tower, signal bridge and passenger shed are visible in the photo. Photo by J.M. Fredrickson. Other Subject Classes: electric locomotive, passenger train