J.B. Leisenring: Gatesburg, IL, nd (c. 1860s). Paperback. Good. Item #22-1437
Soiled else good. Possibly a version of Vicomte Ponton's de Amecourt's helicopter which was built in 1863. He used clockwork motors in his later designs and this photograph's subject has what appears to be clockworks as the guts. Obviously SCARCE.