Pima Air and Space Museum

Tucson, Arizona

October 2002

The world's first mass produced helicopter, the Sikorsky R-4 Hoverfly, Pima Air and Space Museum, Tucson, Arizona.
The world's first mass produced helicopter, the Sikorsky R-4 Hoverfly, Pima Air and Space Museum, Tucson, Arizona.
October 05, 2002Canon PowerShot S3001/125 sec at f / 3.27.94 mm© 2008 Lawrence I. Charters
Lawrence I. Charters