Cite

Columbia Basin Irrigation Project : Grand Coulee Dam, headquarters Spokane.

MLA

Columbia Basin Irrigation Project : Grand Coulee Dam, Headquarters Spokane. Spokane Chamber of Commerce?, 1949. https://collections.library.yale.edu/catalog/15821692.

APA, 6th edition

Columbia Basin Irrigation Project : Grand Coulee Dam, headquarters Spokane. (1949). [Maps--Washington--Spokane--1949]. Spokane Chamber of Commerce?, https://collections.library.yale.edu/catalog/15821692.