Ralston patent side dumps build by Pacific Car & Foundry 1940, light weight 28,000 lbs., capacity 60,000 lbs. Originally WP&YR 801-805, renumbered 861-865 in 1949, renumbered 661-665 in 1960. #661-662 and 664 can be found today at the Sumpter Valley Railroad at McEwen, Oregon. #665 still remain at Skagway museum. Car #663 was traded back to the WP&YR from the SVRy in May 2005 and was shipped from the Alaska Marine Line yard to the shops at June 6, 2005. This car received a new paint shop at the Sumpter Valley Ry.