Caption on image: "Bridge at tunnel White Pass and Yukon Route" Original image in Hegg Album 2, page 26. *Subjects (LCTGM): Mountains--Alaska; Railroad tunnels--Alaska--Tunnel Mountain; Railroad bridges--Alaska--Tunnel Mountain; Trestles--Alaska--Tunnel Mountain; Railroad construction & maintenance--Alaska--Tunnel Mountain *Subjects (LCSH): Tunnel Mountain (Alaska); White Pass & Yukon Route (Firm)