A colorful assortment of power sits at the Ivy City Engine Terminal in Washington DC on a September day in 1975. Front and center is Southern Railway E8A 6905 (ex-SOU 2928, built 9/51), still in passenger service for the Southern Railway (which did not initially join the Amtrak system when it was formed in 1971). Hiding behind the E-unit is Baltimore & Ohio 6606, a steam-generator equipped GP9 used on Washington to Baltimore commuter trains. And behind that is an assortment of Amtrak SDP40F diesels (582 and, behind that, 609, with others not visible).
