| 1939 UNITED Needle Lubricating Mechanism Art |
| 1939 WAUGH EQUIPMENT Cushioning Mechanism Art |
| 1939 MCLAUGHLIN Propelling Lifting Mechanism Art |
| 1939 CLARK Cushioning Mechanism Patent Print Art |
| 1939 MINER INC W H Shock Absorbing Mechanism Art |
| 1939 MRS Striking Mechanism Clocks Art Print |
| 1939 ALLEN Propelling Mechanism Patent Print Art |
| 1939 CURTISS WRIGHT CORP Wing Flap Mechanism Art |
| 1939 ANTHONY INC Tipping Mechanism Art Print |
| 1939 DE Looper Mechanism For Sewing Machines Art |
| 1939 DE SPAIN Sewing Mechanism Patent Print Art |
| 1939 STANLEY Locking Mechanism Accordions Art |
| 1939 UNION Hand Brake Mechanism Art Print Patent |
| 1939 UNION Looper Mechanism Sewing Machines Art |
| 1939 WELD Warning Signal Mechanism Art Print |
| 1939 FURNISH Freight Transporting Mechanism Art |
| 1939 EDWARD Change Speed Mechanism Bicycles Art |
| 1939 DE Presser Mechanism Sewing Machines Art |
| 1939 SMITH Tufting Mechanism Sewing Machines Art |
| 1939 GAMEWELL Warning Signal Mechanism Art |
| 1939 KUCERA Looper Mechanism Sewing Machines Art |
| 1939 DYNES Time Clock Mechanism Patent Print Art |
| 1939 PEARSON Log Raft Log Rafting Mechanism Art |