found: Work cat.: Mt. Challenger viewed from Whatcom Pass, n.d., via the Dwight Watson digital images collection, Mar. 20, 2008.
found: GNIS, Mar. 20, 2008(Whatcom Pass, gap, Washington, Whatcom Co., 48°52ʹ31ʺN 121°21ʹ52ʺW)
found: Washington place names, via WWW, Mar. 20, 2008(Whatcom Pass at a level of 5282 feet elevation is in the central portion of the northern unit of North Cascades National Park. It is northwest of Mount Challenger and is at the headwaters of Brush Creek and Little Beaver Creek. It is northeast of Whatcom Peak.)
