Amtrak diesel locomotive 574, an EMD SDP40F at King Street Station in Seattle, Washington in 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotives 574 at Seattle, Washington in June 1974. Amtrak 574 and 575 lead train number 17 at King Sreet Station in Seattle. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotives, passenger train

Amtrak diesel locomotive 576, an EMD SDP40F at Balmer Yard in Seattle, Washington, circa 1978. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 578, an EMD SDP40F at Seattle, Washington in August 1974 during King Dome construction. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 580, an EMD SDP40F with the King Dome construction in the background at Seattle, Washington in August 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 580, an EMD SDP40F with the King Dome construction in the background at Seattle, Washington in August 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 581, an EMD SDP40F at Seattle, Washington in August 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 615, an EMD SDP40F at King Street Station in Seattle, Washington in June 1979. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 629, an EMD SDP40F on her first trip to Seattle, Washington on July 15, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 629, an EMD SDP40F on her first trip to Seattle, Washington on July 15, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train