| 1928 BLISS E W CO Stop Valve Torpedoes Art Print |
| 1928 GULBRANSEN Valve For Player Pianos Patent |
| 1928 AMERICAN VALVE METER COMPA Automatic Switch Stand |
| 1928 SWEET DONALD Measuring Valve Patent Print |
| 1928 WATERS Valve Action For Pipe Organs Patent |
| 1928 GULBRANSEN Valve Player Pianos Art Print |
| 1928 PETERSON Regulating Valve For Water Troughs |
| 1928 DUDLEY Method Adjusting Valve Throw Art |
| 1928 CHRISTIAN Racing Game Valve Patent Print |
| 1928 CANADIAN Direction Valve Operating Dump Cars |
| 1928 STRINGFIELD Musical Instrument Valve Patent 17264 |
| 1928 JOHNSON Piston Valve For Cornets Patent |
| 1928 FLOYD Electrically Operated Organ Valve Control |
| 1928 LAMAR Musical Instrument Valve Patent Print |
| 1928 BEACH JOHN Safety Valve Patent Print Art |
| 1928 LA Organ Valve Action Unit Patent Print Art |
| 1928 EDWIN PIERSON Valve Operating Means Patent |
| 1928 JOSEPH Valve Operating Means Patent Print |
| 1928 DUDLEY Adjusting Valve Throw Art Print |
| 1928 BASSICK MFG CO Measuring Valve Patent Print |
| 1928 AMERICAN PIANO Method Adjusting Valve Throw |
| 1928 VIBERG Direction Valve Operating Dump Cars |
| 1928 AMERICAN PIANO Adjusting Valve Throw Art |
| 1928 J W YORK SONS Piston Valve Cornets Art |
| 1928-LOCOMOTIVE VALVE MOTION-INSTRUCTION BOOKLET |