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

Pennsylvania Railroad electric locomotive 4872 (type GG-1) leads a train at Washington, District of Columbia in 1951. Photo by J.M. Fredrickson. Other Subject Classes: electric locomotive

Pennsylvania Railroad electric locomotive 4926 (type GG-1) leads a passenger train at Washington, District of Columbia on July 16, 1964. Photo by J.M. Fredrickson. Other Subject Classes: electric locomotive

Washington Metropolitan Area Transit Authority (Metro) train at Washington, District of Columbia, on July 1, 1982. Photo by J.M. Fredrickson. Other Subject Classes: electric locomotive, passenger train.