The Autogiro

1930. PITCAIRN-CIERVA. The Autogiro. 1 preliminary leaf, 5-31, [1] pp. Illustrated throughout with photographs. Folio, bound in publisher's cloth-backed decorated boards and cardboard slipcase. Philadelphia: Pitcairn- Cierva autogiro Company of America 1930. The precursor of the helicopter- the autogiro was a modified airplane with a helicopter-like propeller. A splendid piece of art deco book design.