| 1930 SIDNEY SHAW Street Indicator Patent Print |
| 1930 HENRY Pitch Indicator Musical Instruments |
| 1930 OSHEI Design Oil Change Indicator Patent 26068 |
| 1930 NUMA Pitch Indicator Musical Instruments |
| 1930 CAMPBELL Bridge Warning Indicator Patent |
| 1930 MORRIS Flight Attitude Indicator Patent |
| 1930 AC SPARK PLUG CO Service Indicator Patent |
| 1930 ANGUS MCMILLAN Station Indicator Patent |
| 1930 DECKER Indicator For Games Patent Print Art |
| 1930 CHRISTOPHER Sunken Submarine Indicator Art |
| 1930 GARBUT Street Indicator For Street Cars Art |
| 1930 ALLEN Football Play Indicator Patent Print |
| 1930 CIRIMELE Indicator Wrecked Submerged Crafts |
| 1930 JOSEPH ZUBATY Service Indicator Patent |
| 1930 GEN ELECTRIC Indicator System Patent Print |
| 1930 FINN MATTHEW Street Indicator Patent Print |
| 1930 TAYLOR Submarine Wreck Indicator Communicating |
| 1930 THOMAS Bridge Score Indicator ADOLPH Patent 29503 |
| 1930 THOMAS Indicator Bridge Score ADOLPH Patent 29504 |
| 1930 POOLE Clock And Similar Indicator Patent |
| 1930 POOLE INC Clock Similar Indicator Art Print |
| 1930 MORRIS Game Indicator Card Tables Patent |
| 1930 WINNIPEG BRASS LTD Street Indicator Street Cars |
| RARE VINTAGE GENERAL TOOL 1930'S DIAL TEST INDICATOR-NR |