| 1920 ROY ADAMS Wheel Hub And Bearing Patent |
| 1920 EUGENE Releasable Bearing Patent Print Art |
| 1920 O'CONNOR JOHN Roller Bearing Patent Print |
| 1920 HYATT ROLLER BEARING Mounting Car Axle Boxes |
| 1920 O'CONNOR Self Alining Side Bearing Patent |
| 1920 WILLIAM H MINER Side Bearing Patent Print |
| 1920 O'CONNOR Antifriction Bearing Patent Print |
| 1920 HYATT ROLLER BEARING Car Axle Mounting Art |
| 1920 WILLIAM H MINER Self Alining Side Bearing |
| 1920 WILLIAM H MINER Body Bolster Side Bearing |
| 1920 WILLIAM Body Bolster Side Bearing Railway Cars |
| 1920 O'CONNOR Side Bearing For Railway Cars Art |
| 1920 WILLIAM H MINER Side Bearing Railway Cars |
| 1920 WILLIAM H MINER Counterbalanced Roller Bearing |
| 1920 BLAIN Bearing Wear Signal Device Patent |
| 1920 BOCK WILLIAM Side Bearing Patent Print Art |
| 1920 MINER Side Bearing For Railway Cars Patent |
| 1920 STANDARD CAR TRUCK CO Side Bearing Patent |
| 1920 FOSTER HARRY Bearing Box Patent Print Art |
| 1920 JOSEPH Bearing Wear Signal Art Print |
| 1920 O'CONNOR Body Bolster Side Bearing Railway Cars |
| 1920 CHESTER G SETZER Bearing Box Patent Print |
| 1920 GEIGER Side Bearing For Railway Cars Patent |
| 1920 STRAIGHT Bearing Method Making Same Art |
| 1920 WILLIAM H MINER Antifriction Bearing Patent |
| 1920 WILLIAM H MINER Roller Bearing Patent Print |
| 1920 KENNETH Stub End Bearing Locomotive Rods |
| 1920 O'CONNOR Body Bolster Side Bearing Patent |
| 1920 O'CONNOR Counterbalanced Roller Bearing Art |
| 1920 O'CONNOR JOHN Side Bearing Patent Print Art |
| 1920 BALDWIN Stub End Bearing Locomotive Rods |
| 1920 WEBB EDWIN Side Bearing Patent Print Art |