50TH ANNIVERSARY OF POWERED FLIGHT. Multicolor relief halftone print commemorating 50 years of powered flight. At bottom, a boy holds a yellow model plane with U.S. Air Force insignia and points to a large moon above. Upon the moon are small, blue images of a jet plane and the Wright Flyer. Full text: at bottom left and right in yellow sans-serif lettering, "Progress" and "Security." Within a yellow banner superimposed on the moon, black sans-serif text, "50TH ANNIVERSARY OF POWERED FLIGHT."