| 1964 CAMPBELL Cargo Pick Up Helicopter Type Aircraft |
| 1948 CAMPBELL Ice Removing Covering Aircraft Art |
| 1950 CAMPBELL Aircraft Rotor Damping Art Print |
| 1941 CAMPBELL HARRIS Aircraft Patent Print Art |
| 1938 CAMPBELL Roadable Autorotative Winged Aircraft |
| 1937 CAMPBELL Ski Mechanism Aircraft Other Vehicles |
| 1944 CAMPBELL HOLLINGSWORTH Aircraft Patent |
| 1960 CAMPBELL Tracking Display Aircraft Art |
| 1952 CAMPBELL Rotative Winged Aircraft Patent |
| 1952 CAMPBELL Damping Rotative Wing Aircraft Art |
| 1951 CAMPBELL Aircraft Rotor Hub Construction |
| 1935 CAMPBELL Aircraft Rotative Sustainingblade Type |
| 1954 CAMPBELL Rotor Equipped Aircraft Patent |
| 1938 CAMPBELL Aircraft Sustaining Rotor Patent |
| 1943 CAMPBELL Rotative Winged Aircraft Patent |
| 1940 CAMPBELL Rotary Winged Aircraft Patent |
| 1939 CAMPBELL Rotative Winged Aircraft Patent |
| 1945 CAMPBELL Rotative Winged Aircraft Patent |
| 1959 CAMPBELL Aircraft Rotor Blade Control Mechanism |
| 1943 CAMPBELL Multirotor Aircraft Patent Print |