Billy Robinson's monoplane next to his hangar in west Grinnell. The hangar was later transported in three parts to the Ben and Harold Buck farm west of Grinnell in Jasper County. (Description taken from Grinnell Then and Now published by the Grinnell…
A stock certificate for one share in the Grinnell Aeroplane Company purchased by James Buswell with a par value of $50 per share. Certificate is signed by L. Braude, president and Harold L. Beyer, secretary.