Boys gathered around ping pong tables at Jefferson Park Clubhouse, East Harlem, New York City.

Boys building model airplanes at Jefferson Park Clubhouse, East Harlem, New York City.

Boys building model airplanes, watched by "Miss Jones" and instructor [?] at Jefferson Park Clubhouse, East Harlem, New York City.

Young boxers in boxing ring with Jack Dempsey at Jefferson Park Clubhouse, East Harlem, New York City.

Young boxers with Jack Dempsey and others at Jefferson Park Clubhouse, East Harlem, New York City.

Boys' boxing match in gymnasium at Jefferson Park Clubhouse, East Harlem, New York City.

Boxing ring and crowd in gymnasium at Jefferson Park Clubhouse, East Harlem, New York City.

Boxing ring and crowd in gymnasium at Jefferson Park Clubhouse, East Harlem, New York City.

Group of boys with an unidentified man at Jefferson Park Clubhouse, East Harlem, New York City.

Boy drawing a ship at the Jefferson Park Clubhouse, East Harlem, New York City.

Boys' Club of New York members receiving dental treatment at Jefferson Park Clubhouse, East Harlem, New York City.