| 1931 AULD D L CO Locking Device Patent Print Art |
| 1934 HAYS JOHN Locking Device Patent Print Art |
| 1920 LINDEN JOHN Locking Device Patent Print Art |
| 1946 MARLOW OWEN Locking Device Patent Print Art |
| 1923 A M FARRELL Locking Device Patent Print Art |
| 1927 PAUL Safety Locking Device Patent Print Art |
| 1923 HAYS JOHN Locking Device Patent Print Art |
| 1924 BORNE LOUIS Locking Device Patent Print Art |
| 1927 LUCAS Door Locking Device For Cane Cars Art |
| 1924 RUSSELL Uncoupling Shaft Locking Device Art |
| 1927 RAMAPO AJAX CORP Safety Locking Device Art |
| 1936 SCHWENDT Railway Switch Locking Device Art |
| 1928 JOHN KRIES Locking Device Patent Print Art |
| 1942 SWIFT Wheel Locking Device Patent Print Art |
| 1921 HARRY Wheel Locking Device Patent Print Art |
| 1948 RUTLEDGE Railway Switch Locking Device Art |
| 1922 BAKER Wheel Locking Device Patent Print Art |
| 1921 GEORGE Auto Locking Device Patent Print Art |
| 1930 PASCO Pedal Locking Device Patent Print Art |
| 1921 WERTS DAVID Locking Device Patent Print Art |