Contains photographs that were possibly given to, collected by, or taken by John H. Lewis, state engineer of Oregon from 1905-1918. Lewis's name appears on the backs of some of the photos in the album. Subjects include photographs of Tumalo Dam and other dams, canals, and flumes from various areas of Oregon; snapshots taken from the summit of South Sister and from other mountain climbing expeditions in Deschutes County; and photographs taken on an expedition down the Columbia and Snake rivers on the steamer Prospector; views of the Klamath Project; and other views of waterways in Oregon.