| 1939 RED WING AN INDIAN FABLE NATIVE AMERICAN BARBELLE |
| 1939 VON ASBOTH Rotary Wing Aircraft Patent |
| 1939 CURTISS WRIGHT CORP Wing Flap Mechanism Art |
| 1939 ZELIE Aircraft Wing Heating Means Patent |
| 1939 SIEGFRIED SCHEU Wing Flap Patent Print Art |
| 1939 AUTOGIRO AMERICA Rotary Blade Wing Aircraft |
| 1939 JAMIESON Rotative Sustaining Wing Aircraft |
| 1939 GRANT Variable Camber Wing Patent Print Art |
| 1939 RENAULT LOUIS Elastic Wing Assemblage Art |
| 1939 FLADER FREDRIC Wing Structure Patent Print |
| 1939 ENGELHARDT Wing Flap Mechanism Patent Print |
| 1939 NEVILLE Wing Fuselage Other Aircraft Body |
| 1939 KARL Airplane Wing Rib Construction Patent |
| 1939 HOVGARD Aircraft Wing Arrangement Patent |
| 1939 LEON Elastic Wing Assemblage Patent Print |
| 1939 ARADO FLUGZEUGWERKE GMBH Wing Flap Patent |
| 1939 CONE Airplane Wing Construction Patent |
| 1939 ZIMMERMAN Slotted Airplane Wing Tip Patent |
| 1939 JAMIESON Rotary Blade Wing Aircraft Art |
| 1939 FRIEDRICH Flapping Wing System Patent Print |
| 1939 ELLIOT Rotary Wing Aircraft Patent Print |
| 1939 CURTISS WRIGHT CORP Wing Structure Patent |
| 1939 JOSEPH Airplane Wing Construction Patent |
| 1939 CURTISS WRIGHT CORP Aircraft Wing Arrangement |
| 1939 RAOUL Rotary Wing Aircraft Patent Print Art |
| 1939 RCA RUDOLPH THE RED NOSED REINDEER, PAUL WING |
| 1939 Camden NJ & Philadelphia PA; 1st Rotary-wing Mail! |
| 2 - 1939 1st FLIGHT U S AIR MAIL ROTARY-WING AIRCRAFT |
| 1939 Camden NJ & Philadelphia PA; 1st Rotary-wing Mail! |