Canadian Pacific Railway spiral tunnels in Yoho National Park, British Columbia in August 1989. CP Tunnels Photo by J.M. Fredrickson. Other Subject Classes: tunnel

A sign explaining the Canadian Pacific Railway spiral tunnels in Yoho National Park, British Columbia in August 1989. Photo by J.M. Fredrickson. Other Subject Classes: tunnel

Canadian Pacific Railway trestle bridge CP 354 at Mountain Creek, BC, circa 1900. A worktrain led by a 4-4-0 class locomotive, Canadian Pacific Railway 354 on the high timber trestle at Mountin Creek in Beaver Valley in the Selkirk Mountains of British Columbi, Canada. Workers with shovels pose on flat cars loaded with dirt or gravel. J.M. Fredrickson collection. Other Subject Classes: trestle, river

Canadian Pacific Railway spiral tunnels with a freight train entering the tunnel in Yoho National Park, British Columbia on July 17, 1990. Photo by J.M. Fredrickson. Other Subject Classes: tunnel

Canadian Pacific Railway spiral tunnel with a westbund freight train at Yoho National Park, British Columbia on July 17, 1990. Photo by J.M. Fredrickson. Other Subject Classes: tunnel

Canadian Railway Museum display of model trains at Delson, Quebec on August 24, 1969. Photo by J.M. Fredrickson. Other Subject Classes: display

Canyon & White Horse Rapids Tramway telegraph office at Canyon City, Yukon Territory, circa 1898. Canadian Mounted Policeman and miners pose in front of the Government Telegraph office. Photo from J.M. Fredrickson Collection. Other Subject Classes: telegraph office.

Cascade Coal Company bunker at Renton, Washington, circa 1910. Elevated view of coal bunker, Columbia and Puget Sound Railroad spur track to bunker, center, and Newcastle branch mainline at left. Other Subject Classes: miscellanea, railroad mainline.

A view of cement plant in Vancouver, Washington, undated.