Original photograph: 17 x 12 cm, black & white photo, with "A" written in front in pencil, caption under photo reads "#176 - Main Canal above headgates, showing temporary pass, used for delivering water to the canal. Nos. 176 to 179 were taken just before the dam was blown out and water turned against the gates. June 27th, 1907", from Brown Album, reorganized by Elaine Roggensees, 1987 Digital reproduction of photograph: Main Canal above headgates, showing temporary pass, used for delivering water to the canal, Brown Album, Bureau of Reclamation
