Northern Pacific Railroad bridge, Seattle, ca 1917 (MOHAI 1824)

This bridge was used by the Northern Pacific railroad to cross the Lake Washington Ship Canal between Fremont and Ballard.
Handwritten on sleeve: Bascule Bridge, Lake Wash. canal.
Subjects (LCTGM): Railroad bridges--Washington (State)--Seattle; Bays--Washington (State)--Seattle; Lumber industry--Washington (State)--Seattle; Lake Washington Ship Canal (Seattle, Wash.)