The Oregon Encyclopedia
Wascopam Mission, Chinook Indians -- Missions, Chinook Indians -- Social life and customs, Dalles (Or.) -- History -- 19th century
Wascopam Mission, which operated at The Dalles from 1838 to 1847, was the most successful of the early Methodist missions to Oregon Indians, recording more converts to the church than the Willamette Mission, its better known equivalent near Salem. The mission was founded by Henry K.W. Perkins and Daniel Lee (nephew of Jason Lee) on March 21, 1838. The precise location of the mission is not known, but it was in the vicinity of the present-day Methodist Church and Pulpit Rock.
Boyd, Robert T., "Wascopam Mission" (2018). Anthropology Faculty Publications and Presentations. 153.