| 1939 HAMMOND INSTR Electronic Musical Instrument |
| 1939 FITCHHORN Flute Musical Instrument Patent 25566 |
| 1939 ENFIELD Musical Instrument Attachment Art |
| 1939 SEVERY VICTOR Musical Instrument Patent |
| 1939 MCCORD HUGH Musical Instrument Patent Print |
| 1939 EMIL E DOPYERA Musical Instrument Patent |
| 1939 TERHAAR Musical Instrument Patent Print Art |
| 1939 FRANK WATSCHINGER Musical Instrument Patent |
| 1939 MORRIS Musical Instrument Carrying Case Art |
| 1939 FIRESTONE Electrical Musical Instrument Art |
| 1939 HENRI SELMER Musical Instrument Patent |
| 1939 ENRICO GOVONI Musical Instrument Patent |
| 1939 CONN LTD C G Musical Instrument Patent |
| 1939 SANDERS Musical Instrument Patent Print Art |
| 1939 RUDOLPH Electrical Stringed Musical Instrument |
| 1939 KISLINGBURY Musical Instrument Patent Print |
| 1939 LAURANS Electrical Musical Instrument Art |
| 1939 JOHN Stringed Musical Instrument Patent |
| 1939 ALEXANDER Musical Instrument Patent Print |
| 1939 EMIL Stringed Musical Instrument Art Print |
| 1939 ELECTRO Stringed Musical Instrument Art |
| 1939 BEAUCHAMP Stringed Musical Instrument Art |
| 1939 FINNEY Stringed Musical Instrument Patent |
| 1939 ALLEN LOOMIS Musical Instrument Patent |
| 1939 WILLIAMS Electrical Musical Instrument Art |
| 1939 FITCHHORN Wind Type Musical Instrument Art |
| 1939 OSCAR Stringed Musical Instrument Art Print |
| 1939 HOLMES Musical Instrument Tuning Art Print |
| 1939 ZIEGNER Musical Instrument Patent Print Art |
| 1939 CENTRAL Electrical Musical Instrument Art |
| 1939 GILBERT Electronic Musical Instrument Art |
| 1939 HAMMOND INSTR Electrical Musical Instrument |
| 1939 GIUSEPPE Musical String Instrument Patent |