| 1944 UPSON Control Mechanism Airplanes Art Print |
| 1944 WERNER Bomb Release Mechanism Patent Print |
| 1944 DAVIS Pump Control Mechanism Patent Print |
| 1944 HILL Airplane Pickup Mechanism Patent Print |
| 1944 Feed Mechanism Machine Guns Art Print |
| 1944 OLSEN Automatic Gun Mechanism Patent Print |
| 1944 FEY Anchor Rope Mechanism Patent Print Art |
| 1944 TUCKER Gun Control Mechanism Patent Print |
| 1944 SPARROW HUBERT Latch Mechanism Patent Print |
| 1944 STEPHEN Controlling Mechanism Patent Print |
| 1944 GARAND JOHN Hammer Mechanism Patent Print |
| 1944 CAULKINS Gun Loading Mechanism Patent Print |
| 1944 BUDD WHEEL CO Brake Mechanism Patent Print |
| 1944 SPENCE Cushioning Mechanism Patent Print |
| 1944 SEITZ JOHN Firing Mechanism Patent Print |
| 1944 BEAUCHAMP Car Door Mechanism Patent Print |
| 1944 NEWELL GEORGE Brake Mechanism Patent Print |
| 1944 REECE Work Clamping Mechanism Art Print |
| 1944 ROY GRADLE Trigger Mechanism Patent Print |
| 1944 LENNON Gun Elevating Mechanism Patent Print |
| 1944 PENNSYLVANIA Transfer Mechanism Art Print |
| 1944 LUCHT VICTOR Recoil Mechanism Patent Print |
| 1944 METZGER Uncoupling Mechanism Patent Print |