The Challenger Air Pilots Association, Chicago's first black flying club, at Robbins Airport.

John C. Robinson (far right) and members pose informally in front of two of their aircraft at the entrance to hangar at their headquarters on January 30, 1933. Aircraft are a Church Mid-Wing Monoplane (front) and possibly a Waco 9 (biplane, rear). Pilots include Janet Harmon Waterford Bragg (standing to right of the nose of the monoplane), Harold Hurd (third from right), and Cornelius Coffey (second from right).

The writing at lower left of the photo reads:

ROBBIN'S AIRPORT All Colored
Mgt. by J. C. ROBINSON 1/30/33
Headquarters of
CHALLENGER AERO CLUB.