| 1937 AYER Controlling Airplane Elevators Art |
| 1937 UNION Circuit Controlling Instrument Art |
| 1937 BULLARD CO Siren Means Controlling Same Art |
| 1937 CRAGO Railway Traffic Controlling Art |
| 1937 THOMPSON Railway Traffic Controlling Art |
| 1937 UNION Controlling Railway Switches Art |
| 1937 YOUNG Controlling Railway Switches Art |
| 1937 SPRAY Railway Traffic Controlling Art |
| 1937 WITMER Circuit Controlling Instrument Art |
| 1937 GREEN Controlling Propeller Blades Art |
| 1937 YOUNG Railway Traffic Controlling Art |
| 1937 ALIEN Railway Traffic Controlling Art |
| 1937 ALLEN Railway Traffic Controlling Art |
| 1937 ALLISON Railway Traffic Controlling Art |
| 1937 ANTONI Automobile Brake Controlling Art |
| 1937 VANHORN Railway Traffic Controlling Art |
| 1937 WILLIAMSON Siren Means Controlling Same Art |
| 1937 GEN Railway Traffic Controlling System Art |
| 1937 UNION Railway Traffic Controlling Art |
| 1937 HARWIG Railway Traffic Controlling Art |
| 1937 GRAVES Automatic Vehicle Controlling Art |
| 1937 VANTASSEL Railway Traffic Controlling Art |
| 1937 O'HAGAN Railway Traffic Controlling Art |