[SP-1]
Manufacturer: William Hawley Bowlus [USA]
First flight: 1929
Dimensions: Length: m (  ft  in )   Wingspan: 13 m ( 42 ft 8 in )   Height: m (  ft  in )
* regional glider, rudder elevator ribs made with paper,

Bowlus SP-1 Paperwing : Glider

Bowlus
SP-1 Paperwing