From the KLVX Steamboats on the Colorado Photograph Collection (PH-00156). "COPY 3921 Reproduction from the Original in the Arizona Historical Society" stamp on verso.
Howard Hughes (second from left) standing under the blade of the XH-17, Flying Crane with L-R: Rea Hopper, Director of the Aeronautical Division, Hughes Aircraft Company; Hughes; Clyde Jones, Director of Engineering, Hughes Tool Company Aeronautical Division; Warren Reed, Assistant; Colonel Carl E. Jackson, Air Research and Development Headquarters; Gale. J. Moore, pilot.