Edwin Hahn is one of the Wilkes-Barre PA plane makers. John Rumpf wrote an excellent book on the subject titled Plane Makers of Wikes-Barre, Pennsylvania: Jacob Siegley, Edwin Hahn, Keystone Tool Works which includes Jacob Siegley, Edwin Hahn and the Keystone Tool Works, all seemingly working together.

Edwin Hahn is believed to make planes from 1902 – 1919

This is a #3

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Check out the other Edwin Hahn plane I have found.