Aerial photograph of the Bonneville Dam on the Columbia River in the Columbia River Gorge. Looking east, up the river. Stamp on the back of the print reads, "Taken by the U.S. Department of the Interior, Bonneville Power Administration, Portland, Oregon. Please credit." Second stamp reads, "H.W.S. Apr 1, 1948." Third stamp reads, "Beaver Engraving Co." of Portland, Oregon.