Model Air Car.

With a hollow whistling note audible over the whine of its tiny engine, this advanced working model of a ground-effect vehicle skims across the floor supported on a cushion of air.
Air is supplied by a prop to a peripheral slot which produces a high-speed wall of air around the edge of the model to retain the lift.

Four pages ( 3 sheets - front on 2 and front & back on other sheet ) B & W photos, illustrations, expanded view and instructional narrative.

My plans are from original source materials such as books, magazines and other publications and the pages are carefully removed.