| 1937 BLISS CARL Timing Mechanism Patent Print |
| 1937 MCGOWAN THOMAS Brake Mechanism Patent Print |
| 1937 COLE Clock Mechanism Patent Print Art |
| 1937 NEWMAN MAX Sewing Mechanism Patent Print |
| 1937 O'CONNOR Hand Brake Mechanism Patent Print |
| 1937 ANTHONY CO Tipping Mechanism Patent Print |
| 1937 NAT Friction Mechanism Car Trucks Art Print |
| 1937 UNITED Driving Stopping Mechanism Art Print |
| 1937 DOUGLAS Switching Mechanism Patent Print |
| 1937 ALLEN EARL Recording Mechanism Patent Print |
| 1937 HURD EDWIN Locking Mechanism Patent Print |
| 1937 NICHOLAS Driving Mechanism Patent Print Art |
| 1937 KLAU Thread Cutting Mechanism Patent Print |
| 1937 UNION Hand Brake Mechanism Art Print Patent |
| 1937 COLE EDWARD Clock Mechanism Patent Print |
| 1937 ERNESTO Propelling Mechanism Patent Print |
| 1937 LARSSON Coupling Mechanism Patent Print Art |
| 1937 MICHAEL Car Loading Mechanism Patent Print |
| 1937 LAUTERBUR Timing Mechanism Patent Print Art |
| 1937 EMIL Time Measuring Mechanism Patent Print |
| 1937 MATTSON BERNARD Game Mechanism Patent Print |
| 1937 STEVENS ALBERT Valve Mechanism Patent Print |
| 1937 FINNEGAN Driving Mechanism Patent Print Art |
| 1937 MINER INC W H Clutch Mechanism Patent Print |
| 1937 GILARDONE Embroidery Mechanism Patent Print |
| 1937 BASELT WALTER Brake Mechanism Patent Print |