A newspaper advertisement for Ormer Locklearïs Flying Circus, 1919. The photo at left shows two Curtiss JN-4D biplanes in formation flight with a wingwalker hanging by his knees from the axle of the higher aircraft. The photo at right shows a clown on a JN-4.

Credits - © 2002 National Air and Space Museum, Smithsonian Institution (SI Neg 85-12327)