View of a gasoline rock drill, possibly the invention of Otho C. Duryea, the brother of Charles E. Duryea. Typed on back: "Subject: Machinery. Collection: MS3/Charles E. Duryea Collection. Source: Estate of Charles E. & M. Jerry Duryea. I.D.: Rock drill, gasoline (Otho C. Duryea's invention?)" Handwritten on back: "Could this have been C.E.D.'s brother's Otho C. Duryea?"
