Unknown2019-02-042019-02-041955EPM-071-02-016http://hdl.handle.net/20.500.11867/15430Single 10 x 8 inch photograph. Label: 4 x 1 inch. Typed. Date est."Busily constructing right-of-way through Dakota territory. This picture shows the Big Cut, Sweet Briar Valley."PhotographRailroads--Design and constructionRailroads--Northern Pacific;