| 1921 GOVERNMENT Target Following Bomb Sight Art |
| 1921 WEED Bomb Carrying Release System Art Print |
| 1921 SPERRY Dirigible Gravity Bomb Patent Print |
| 1921 CLARY PERRY Aerial Bomb Patent Print Art |
| 1921 FRANCIS RANKEN Bomb Release Gear Patent |
| 1921 JOHNSON Aerial Torpedo Or Bomb Patent Print |
| 1921 ABI MAYERSON Bomb STANLEY CONROY J Patent |
| 1921 EKMAN Multiple Gun Firing Bomb Art Print |
| 1921 HADAWAY JOHN Aerial Bomb Patent Print Art |
| 1921 GODDARD JOHN Bomb JOHN J MCINERNEY Patent |
| 1921 SAID SPERRY Dirigible Gravity Bomb Patent |
| 1921 SAMUEL HOUGH Aerial Bomb Patent Print Art |
| 1921 SMITH Target Following Bomb Sight Patent |
| 1921 DUCK LOUIS Exploding Toy Bomb Patent Print |
| 1921 CLARKE Bomb Magazine For Aeroplanes Patent |
| 1921 STANLEY CONROY J Bomb Patent Print Art |
| 1921 BETTICA Airplane Bomb Explosive Tubes Patent 22384 |
| 1921 ALBERTO Bomb For Aeroplanes Patent Print |
| 1921 HUNGERFORD Bomb Electric Circuit War Patent 22375 |
| 1921 LEE Projectile And Bomb Combined Patent |
| 1921 FRANCIS RANKEN Bomb Patent Print Art |
| 1921 JOHN J MCINERNEY Bomb Patent Print Art |
| 1921 HUNGERFORD OLIVER Bomb Patent Print Art |
| 1921 WOODBERRY JOHN Grenade Or Bomb Patent Print |