1932 Packard coupe roadster and Packard diesel engine airplane

8x10 black and white Packard Co. file photograph of a 1932 Packard three-quarter right side view, top folded, male driver, one woman, two men standing at side, Packard diesel engine airplane in background. Inscribed on photo back: Packard 900, light eight, ninth series, 8-cylinder, 110-horsepower, 127.75-inch wheelbase, 2/4-person coupe roadster, note 1932 D.C. license plate #D-25-45, plate at right side of car: "The New Packard," demonstration of Packard diesel-powered plane at Hoover Airport, …