| 1964 CAMPBELL JERRY Jet Engine Patent Print Art |
| 1941 CAMPBELL GREGORY Game Patent Print Art |
| 1938 CAMPBELL CO INC AS Frame Patent Print Art |
| 1957 CAMPBELL Rubber Draft Gear Patent Print Art |
| 1920 ARGYLE CAMPBELL Grain Car Patent Print Art |
| 1941 CAMPBELL HARRIS Aircraft Patent Print Art |
| 1956 CAMPBELL DAVID Draft Gear Patent Print Art |
| 1920 CAMPBELL WALTER Tire Lock Patent Print Art |
| 1931 CAMPBELL Body Construction Patent Print Art |
| 1947 CAMPBELL FRANK Thread Rack Patent Print Art |
| 1952 CAMPBELL FRANK Ski Binding Patent Print Art |
| 1964 CAMPBELL FLOYD Container Patent Print Art |
| 1960 CAMPBELL SR Hood Mount Patent Print Art |
| 1923 CAMPBELL WARDEN Brooder Patent Print Art |
| 1966 CAMPBELL ALVIN Pet Toilet Patent Print Art |
| 1933 ALLAN CAMPBELL Ammunition Patent Print Art |
| 1921 CAMPBELL DONALD Grain Door Patent Print Art |
| 1938 CAMPBELL HARRY Javelin Patent Print Art |
| 1920 CAMPBELL Uncoupling Device Patent Print Art |
| 1952 CAMPBELL PIERCE Golf Tee Patent Print Art |
| 1960 CAMPBELL Rubber Draft Gear Patent Print Art |
| 1921 CAMPBELL Transmission Lock Patent Print Art |
| 1923 ARGYLE CAMPBELL Hopper Car Patent Print Art |
| 1945 CAMPBELL JOHN Hand Grenade Patent Print Art |
| 1946 CAMPBELL Aerodynamic Brake Patent Print Art |
| 1924 WALLACE CAMPBELL Cleat Patent Print Art |