| 1920 ALLMAN WILLIAM Flying Machine Patent Print |
| 1920 CARR JOHN Flying Machine Patent Print Art |
| 1920 SLOAN IRA Flying Machine Patent Print Art |
| 1920 PHILLIPS THOMPSON Flying Machine Patent |
| 1920 GIANNI Multiplane Flying Machine Patent |
| 1920 HENRY GEORGE Flying Machine Patent Print |
| 1920 MATIJA BESHENICH Flying Machine Patent |
| 1920 FRED Automatic Flying Machine Bomb Dropper |
| 1920 WILKINSON JOHN Flying Machine Patent Print |
| 1920 VORACEH FRANK Flying Machine Patent Print |
| 1920 MAURICE LECUYER Flying Machine Patent Print |
| 1920 RITTER CARL Flying Machine Patent Print Art |
| 1920 JOHN H RITTER JOHN J RITTER Flying Machine |
| 1920 MARTIN FEDDERS Flying Machine Patent Print |
| 1920 ALEXIS Flying Machine With Revolving Wings |
| 1920 GIUSEP CANNISTRA Flying Machine Patent |
| 1920 COOPER HEWITT Flying Machine Patent Print |
| 1920 RONEY ALEXANDER Flying Machine Patent Print |
| 1920 BESHENICH Flying Machine Patent 22086 |
| 1920 NOBLE WISNER Flying Machine Patent Print |
| 1920 HARVEY PETER Flying Machine Patent Print |
| 1920 PAUL YESO Flying Machine Patent Print Art |
| 1920 FRANK STOKLOSA Flying Machine Patent Print |
| 1920 DOELCKNER Toy Flying Machine Patent Print |
| 1920 WEBB JOHN Flying Machine Patent Print Art |
| 1920 WATTS HENRY Flying Machine Patent Print Art |
| 1920 EDWARD Heavier Than Air Flying Machine Art |
| 1920 FRANK VOGELZANG Flying Machine Patent Print |
| 1920 BERLIN BENDER Flying Machine Patent Print |
| 1920 COY ORSETT Flying Machine Patent Print Art |
| 1920 LIND OTTO Flying Machine Patent Print Art |