Original photograph: 17 x 12 cm, black & white photo, with "A" written in front in pencil, "81" in red ink, two lines torn down picture, caption under photo reads "#13 - Dredge working on Div. 1 above tunnel, D.W.M. 6/16/06", from Brown Album, reorganized by Elaine Roggensees, 1987 Digital reproduction of a photograph: Dredge working on Div.1 above tunnel, Brown Album, Bureau of Reclamation
