Flag Designed for the National Air and Space Museum, Smithson Bicentennial, by Unknown, c. 1971, Smithsonian Archives - History Div, Bureau flags were designed for all the Smithsonian bureaus for the celebration of the bicentennial of James Smithson's birth. The thirteen individual banners were all similar except for the design of the canton in the upper left corner. All have a blue field with gold fringe on the upper, lower, and right sides. In the center is a gold sun burst with sixteen alternating straight and wavy rays representing the "increase and diffusion of knowledge." The canton for the National Air and Space Museum features a plane in a small blue circle..