Original photograph: 17 x 12 cm, black & white photo, with "A" written in front in pencil, "152" in red ink, caption under photo reads " #76 - Cement lined canal above tunnel, November 24, 1906", from Brown Album, reorganized by Elaine Roggensees, 1987 Digital reproduction of photograph: Cement lined canal above tunnel, Brown Album, Bureau of Reclamation