Original photograph: 17 x 12 cm, black & white photo, with "NA" written in front in pencil, "135" in red ink, caption under photo reads "#60. Lower portal of tunnel and Concrete lined section of Canal. D.W.M. 10/14/06", from Brown Album, reorganized by Elaine Roggensees, 1987 Digital reproduction of photograph: Lower portal of tunnel and Concrete lined section of Canal, Brown Album, Bureau of Reclamation