Boundary Commission Sheet 32

Boundary between Alberta and British Columbia. Office of the Surveyor-General, 1924
Internet Archive

Sheet 32 — Moose Pass to Cacajou Pass. Surveyed in 1922, 1924

References:

Cautley, Richard William [1873–1953], and Wheeler, Arthur Oliver [1860–1945]. Report of the Commission Appointed to Delimit the Boundary between the Provinces of Alberta and British Columbia – Part III – from 1918 to 1924. Atlas. Ottawa: Office of the Surveyor General, 1925
Cautley, Richard William [1873–1953], and Wheeler, Arthur Oliver [1860–1945]. Report of the Commission Appointed to Delimit the Boundary between the Provinces of Alberta and British Columbia. Parts IIIA & IIIB, 1918 to 1924. From Yellowhead Pass Northerly. Ottawa: Office of the Surveyor General, 1925. Whyte Museum

Spiral Road — Vicinity of Mount Robson