| 1921 J J SHIPP Flying Machine Patent Print Art |
| 1921 HARRY VASS Flying Machine Patent Print Art |
| 1921 GIANNI CAPRONI Flying Machine Patent Print |
| 1921 DENNIS ROOTS Flying Machine Patent Print |
| 1921 MONTAGUE HAROLD Flying Machine Patent Print |
| 1921 KION MAX Flying Machine Patent Print Art |
| 1921 GARDNER LEVI Flying Machine Patent Print |
| 1921 JOSEPH BRUNELLI GEORGE DICK Flying Machine |
| 1921 DANIEL FENSKE Flying Machine Patent Print |
| 1921 ARTHUR B SULLIVAN High Altitude Flying Machine |
| 1921 WILHELM Captive Flying Machine Helicopter Type |
| 1921 COOPER HEWITT Flying Machine Patent Print |
| 1921 PETTER FROVARP Flying Machine Patent Print |
| 1921 VIGILIO MATTIVI Flying Machine Patent Print |
| 1921 JOHN C KLEIST Flying Machine Patent Print |
| 1921 HUTCHINSON Toy Flying Machine Motor Patent |
| 1921 AUGUST BERG Flying Machine Patent Print Art |
| 1921 MOTT High Altitude Flying Machine Patent |
| 1921 JOHN HALLSTEAD Flying Machine Patent Print |
| 1921 HICKS CHARLES Flying Machine Patent Print |
| 1921 RILEY GEORGE Flying Machine Patent Print |
| 1921 ZUROVEC Captive Flying Machine Helicopter Type |
| 1921 WENZEL HAUPT Flying Machine Patent Print |
| 1921 SMITH JOHN Flying Machine Patent Print Art |
| 1921 ERNEST HOLT Flying Machine Patent Print Art |
| 1921 GIANNI Multiplane Flying Machine Patent |