Fleetwing may refer to two American bicycle companies.
The original Fleetwing Bicycle company was based in Buffalo, New York circa 1890-1930.
Another Fleetwing bicycle company emerged in Boston circa 1978, reportedly a house brand of the Jordan Marsh department stores. Several of these Fleetwing frames are made from Chromoly Steel. One of the 1977/1978 models included the "Monterey", a three speed cruiser.
Brown, Sheldon. "Servicing English Three Speeds", www.sheldonbrown.com