LeBlond 5D
LeBlond/Ken-Royce 5F

LeBlond Engines, Inc. was one of the better known small engine manufacturers of the late 1920s and 1930s. The company designed and built five- and seven-cylinder radial engines.

1928: The LeBlond Co of Cincinnati purchases Detroit Aircraft Engineering and it's 5-cylinder Air Cat.

1937: Rearwin Airplanes buys LeBlond and re-names the company Ken-Royce Motors