| 1939 GEN MOTORS CORP Selector Switch Patent |
| 1939 GEN ELECTRIC Heat Exchange Apparatus Patent |
| 1939 GEN ELECTRIC Air Flow Control Apparatus Art |
| 1939 GEN MOTORS CORP Driving Mechanism Cycles |
| 1939 GEN MOTORS CORP Journal Box End Thrust Arrangement |
| 1939 GEN ELECTRIC Center Plate Cushioning Art |
| 1939 GEN ELECTRIC Control Means Transmitters Art |
| 1939 GEN STEEL CASTINGS CORP Railway Truck Structure |
| 1939 GEN ELECTRIC Submarine Signaling Patent |
| 1939 GEN ELECTRIC Oscillation Generator Patent |
| 1939 GEN MOTORS CORP Grille Construction Patent |
| 1939 GEN MOTORS CORP Steering Column Lock Patent |
| 1939 GEN ELECTRIC Power Plant Aircraft Art Print |
| 1939 GEN Interlocking System Railroads Art Print |
| 1939 GEN STEEL CASTINGS CORP Railway Truck Art |
| 1939 GEN MOTORS CORP Defrosting Refrigerators |
| 1939 GEN Railway Traffic Controlling System Art |
| 1939 GEN ELECTRIC Power Plant Patent Print Art |
| 1939 GEN ELECTRIC Electromagnetic Rail Brake Art |
| 1939 GEN ELECTRIC Mirror Clock Patent Print Art |
| 1939 GEN MOTORS CORP Freight Car Loading Art |
| 1939 GEN MOTORS CORP Sounding Signal Art Print |
| 1939 GEN ELECTRIC Time Switch Patent Print Art |
| 1939 GEN RAILWAY SIGNAL CO Light Signal Railroads |
| 1939 GEN RAILWAY SIGNAL CO Control Switch Patent |
| 1939 GEN MOTORS CORP Steering Column Lock Switch |
| 1939 Photo Spanish Civil War Gen, Franco Victory Parade |
| 1939 Photo Spain Civil War Parade Honors Gen. Franco |
| 1939 Calendar,E. McCarty Gen. Store,Esperance,N.Y. |
| 1939 Photo Spanish Civil War Ministers Oath Gen Franco |
| 1939 Photo Spanish Civil War Gen. Franco Reviews Navy |