| 1929 WILLIAMS Rocking Dump Body Patent Print Art |
| 1929 MCGAHEY Dump Car Door Lock Patent Print Art |
| 1929 INT MOTOR CO Double Acting Tail Gate Dump Trucks |
| 1929 SCHMOHL Fluid Pressure Operated Railway Dump Car |
| 1929 HIGHWAY TRAILER CO Rocking Dump Body Patent |
| 1929 REID FREDERICK Side Dump Vehicle Patent |
| 1929 ENTPR Dump Car Door Operating Mechanism Art |
| 1929 SMITH RALPH Dump Body GALION METALLIC VAULT |
| 1929 GALION METALLIC VAULT Dump Body Art Print |
| 1929 HIGHWAY TRAILER CO Latch Tiltable Dump Bodies |
| 1929 EAGLE WAGON WORKS Rear End Dump Box Vehicles |
| 1929 NEIN Double Acting Tail Gate Dump Trucks |
| 1929 FRUEHAUF TRAILER CO Side Dump Vehicle Art |
| 1929 ARGYLE Dump Car Door Operating Mechanism |
| 1929 COPPOCK Discharge Controlling Dump Bodies |
| 1929 HOGE WILLIAM Dump Body Hinge Patent Print |
| 1929 PAGE Dump Valve For Fluid Containers Patent |
| 1929 SHERWOOD Rear End Dump Box Vehicles Art |
| 1929 SUMMERS Dump Bed Hoist For Trucks Patent |
| 1929 WINN Swivel Dump Body Motor Trucks Art |
| 1929 KOPPEL IND CAR EQUIPMENT C Door Dump Car Bodies |
| 1929 WILLIAMS Latch Tiltable Dump Bodies Art |
| 1929 PRESSED Fluid Pressure Operated Railway Dump Car |
| 1929 BLACKMORE Toy Dump Wagon Patent Print Art |
| 1929 SCHMOHL Door For Dump Car Bodies Patent |