| 1942 CHANDLER Electrical Switch Patent Print Art |
| 1942 HERMAN WILLIAMS Electrical Switch Patent |
| 1942 UNION SWITCH SIGNAL CO Electrical Relay Art |
| 1942 BENJAMIN Electrical Control Apparatus Art |
| 1942 ZUCK Electrical Musical Instrument Patent |
| 1942 UNION SWITCH SIGNAL CO Electrical Control |
| 1942 IBM Electrical Control System Patent Print |
| 1942 PULLAN Electrical Draftsman Symbol Patent 30390 |
| 1942 ANTHONY Electrical Detector Base Patent |
| 1942 HENRY Electrical Musical Instrument Patent |
| 1942 HAMMOND INSTR Electrical Musical Instrument |
| 1942 EVERETT PIANO Electrical Musical Instrument |
| 1942 COLSON Electrical Clearance Measuring System |
| 1942 LAURENS Electrical Musical Instrument Art |
| 1942 GALLAGHER Electrical Timing Art Print |
| 1942 LAURENSON Electrical Relay Patent Print Art |
| 1942 ARESEE COMPANY INC Electrical Switch Patent |
| 1942 INT REGISTER CO Electrical Timing Art |
| 1942 HANERT Electrical Musical Instrument Patent |
| WORLD WAR II TECH MANUAL 1942 AIRCRAFT ELECTRICAL SYS |
| Old 1942 COYNE ELECTRICAL & RADIO SCHOOL BOOK Chicago |