View of a 1905 Duryea six cylinder aeronautic engine. Typed on back: "Subject: Engines--Aeronautics. Collection: MS3/Charles E. Duryea Collection. Date: 1905. Source: Estate of Charles E. & M. Jerry Duryea. I.D.: Make 'Duryea, six cylinder engine, aviation, 40 h.p. of 1905' as photographed 12 May 1939. Identification as copied from back of photo. Probably C.E. Duryea's writing in black." Stamped on back: "M.J. Duryea, 17 Farmington Avenue, Longmeadow, Mass." Handwritten on back: "From Harry T. Rosen, Ashtabula, Ohio, 5/12/39."