Original photograph: 21 x 16 cm, black & white photo, with "646 A" written in front in pencil, caption under photo reads "Alfalfa land prepared and being irrigated by border method, June 30, 1929", white stains at top of photo, from Gray Album, page 48 Digital reproduction of photograph: Alfalfa land prepared and being irrigated by border method, Gray Album, Bureau of Reclamation
