| 1939 FIRESTONE Electrical Musical Instrument Art |
| 1939 LANGDON Electrical Protective System Patent |
| 1939 WESTINGHOUSE AIR BRAKE CO Electrical Connecter |
| 1939 RUDOLPH Electrical Stringed Musical Instrument |
| 1939 CAMERON Electrical Connecter Patent Print |
| 1939 FISHER ARTHUR Electrical Relay Patent Print |
| 1939 LAURANS Electrical Musical Instrument Art |
| 1939 ERLE Electrical Engine Control Mechanism |
| 1939 UNION SWITCH SIGNAL CO Electrical Relay Art |
| 1939 MISHELEVICH Electrical Relay Patent |
| 1939 AMERICAN Electrical Protective System Art |
| 1939 WILLIAMS Electrical Musical Instrument Art |
| 1939 SINGER Unitary Electrical System Sewing Machines |
| 1939 ELECTRICAL RES PROD INC Watch Rate Recorder |
| 1939 WAY Unitary Electrical System Sewing Machines |
| 1939 SHAW NOBLE Electrical Relay Patent Print |
| 1939 CENTRAL Electrical Musical Instrument Art |
| 1939 HAMMOND INSTR Electrical Musical Instrument |
| 1939 CLARK Electrical Plug Ornamentation Patent 30335 |
| 1939 ANDERSEN Electrical Recording GENERAL Patent 26147 |
| 1939 NEW YORK WORLD'S FAIR POSTCARD, ELECTRICAL BLDG |
| 1939 NEW YORK WORLD'S FAIR POSTCARD - ELECTRICAL BLDG |
| Postcard 1939 New York world's fair electrical building |