[3] Under the Corben Sport Plane and Supply Co. (Peru, Indiana), two versions were offered, using the same wings, tails, controls and landing gear: a single-seat.

[3] Later models utilized various engines -- facilitated by the removeable motor mount -- including the 45-hp Szekely SR-3, 40-hp Salmson AD9, 35-hp Continental A-40, or 30-hp Heath B4.

[2][9] The Corben Sport Plane and Supply Co. (Peru, Indiana), began producing the Baby Ace both in kit form and as a complete, flying aircraft.

The series of articles were in conjunction with a CAA effort to revitalize American aviation by promoting amateur built aircraft.

[3] To avoid compromising its non-profit status, EAA sold the rights to the planes to Cliff DuCharme (West Bend, Wisconsin), who resumed kit production, with a revised Model D (first flight: November 15, 1956).

[12] In 1974, aviation historians John Underwood and Peter Bowers reported 200 Baby Aces were flying, with only one prewar example still active.

They noted that only a very few of the Junior Aces had been built before the 1930s CAA crackdown on amateur-built aircraft, with just two of the 1930s two-seaters still flying.

[9] However, in 1979, aviation journalist Don Dwiggins estimated the number of flying Baby Aces in the United States and Canada had dwindled to around 70.