Abstract Elmer Perry Dodd (born 1869) was a developer and irrigation advocate for the Umatilla area of Oregon. Collection includes correspondence, research notes, documents and printed materials regarding irrigation projects in the Umatilla area, particularly the Umatilla Rapids Project and McNary Dam, 1902-1954; and correspondence and documents regarding the Columbia Valley Association, Inland Waterways Association, and Bureau of Reclamation hearings. Correspondents include Walter M. Pierce, Charles...