Boundary between Alberta and British Columbia. Office of the Surveyor-General, 1924
Internet Archive
Alberta-British Columbia Boundary Commission maps 1924
Sheet 27 B — Whirlpool Pass. Surveyed in 1921
This map includes:
Beacon Lake
Chalk Lake
Mallard Peak [as “Mallard Mtn.”]
Mazama Creek
Middle Whirlpool River
Whirlpool Pass
Beacon Lake
Chalk Lake
Mallard Peak [as “Mallard Mtn.”]
Mazama Creek
Middle Whirlpool River
Whirlpool Pass
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