| 1930 SCHMIDT Stringed Musical Instrument Patent |
| 1930 LOCKWOOD Automatic Musical Instrument Art |
| 1930 BEYER HERBERT Musical Instrument Patent |
| 1930 MARX HENRY Musical Instrument Patent Print |
| 1930 JANSSEN Musical Instrument Case Patent |
| 1930 HASTEROK Musical Instrument Holder Patent |
| 1930 OVERTON Musical Instrument Patent Print Art |
| 1930 PRICE Reproducing Musical Instrument Patent |
| 1930 EDMOND Automatic Musical Instrument Patent |
| 1930 CURTIS Stringed Musical Instrument Patent |
| 1930 LEONARD String Musical Instrument Patent |
| 1930 PARKINSON Musical Instrument Patent Print |
| 1930 KIRK Stringed Musical Instrument Patent |
| 1930 GEORGE Stringed Musical Instrument Art |
| 1930 OSCAR SCHMIDT INC Stringed Musical Instrument |
| 1930 GARDNER Musical Instrument Playing Means |
| 1930 FRANK HOLTON Wind Musical Instrument Art |
| 1930 JOHN Stringed Musical Instrument Patent |
| 1930 CHARLTON Wind Musical Instrument Patent |
| 1930 PATTERSON Musical Instrument Patent Print |
| 1930 GEORGES Musical Instrument Patent Print Art |
| 1930 LEONARD Stringed Musical Instrument Patent |
| 1930 ZIMMERMAN Musical Instrument FULLEN Patent 25512 |
| 1930 MAX LEVIN Stringed Musical Instrument Mute |
| 1930 J C DEAGAN INC Musical Instrument Patent |
| 1930 RUDOLPH WURLITZER Automatic Musical Instrument |
| 1930 HARRY Musical Wind Instrument Patent Print |
| 1930 PARKER JR Musical Instrument Patent Print |
| 1930 VASEY JOSEPH Musical Instrument Patent |
| 1930 ISRAEL Stringed Musical Instrument Mute Art |
| 1930 DYTCH Musical Wind Instrument Patent 17284 |
| 1930 TRUETT VELMA Musical Instrument Patent |