| 1937 HARBERT Dump Car Door Operating Mechanism |
| 1958 PULLMAN Ballast Car Door Operating Mechanism |
| 1920 ARGYLE Car Door Operating Mechanism Patent |
| 1966 LUNDE Gable Bottom Car Door Operating Art |
| 1925 STANDARD STEEL CAR Car Door Operating Mechanism |
| 1942 ARGYLE Hopper Car Door Operating Mechanism |
| 1923 STANDARD STEEL CAR Car Door Operating Mechanism |
| 1926 ARGYLE Dump Car Door Operating Mechanism |
| 1942 ENTPR Hopper Car Door Operating Mechanism |
| 1951 STANDARD Railway Car Door Operating Mechanism |
| 1921 PRESSED STEEL CAR CO Door Operating Mechanism |
| 1923 ARGYLE Car Door Operating Mechanism Patent |
| 1950 ZIMMER Safety Railway Car Door Operating Mechanism |
| 1922 ENTPR Dump Car Door Operating Mechanism |
| 1959 SODDY Railway Car Side Door Operating Gear |
| 1929 ZIMMER Car Door Operating Mechanism Patent |
| 1929 ENTPR Dump Car Door Operating Mechanism Art |
| 1927 MITCHELL Hopper Car Door Operating Art |
| 1959 CHICAGO Railway Car Side Door Operating Gear |
| 1928 JOHN Grain Car Door Operating Means Patent |
| 1922 ARGYLE Dump Car Door Operating Mechanism |
| 1949 ENTPR Dump Car Door Operating Mechanism Art |
| 1920 ENTPR Car Door Operating Mechanism Art |
| 1926 ENTPR Dump Car Door Operating Mechanism Art |
| 1927 AMERICAN Lock Car Door Operating Mechanism |
| 1929 ENTPR Car Door Operating Mechanism Art |
| 1922 TREVOR Car Door Operating Mechanism Patent |
| 1923 ANDREW Car Door Operating Mechanism Patent |
| 1958 FAVERTY Ballast Car Door Operating Mechanism |
| 1929 ARGYLE Dump Car Door Operating Mechanism |
| 1921 THOMAS Car Door Operating Mechanism Patent |
| 1925 ANDERSON Car Door Operating Mechanism Art |
| 1921 ARGYLE Dump Car Door Operating Mechanism |
| 1926 ARGYLE Car Door Operating Mechanism Patent |
| 1925 ENTPR Car Door Operating Mechanism Art |
| 1949 ZIMMER Dump Car Door Operating Mechanism |
| 1922 AMERICAN Car Door Operating Mechanism Art |
| 1921 ENTPR Dump Car Door Operating Mechanism |
| 1937 ILLINOIS Dump Car Door Operating Mechanism |
| 1927 ADOLPH Lock Car Door Operating Mechanism |
| 1951 NYSTROM Railway Car Door Operating Mechanism |
| 1925 ARGYLE Car Door Operating Mechanism Patent |
| 1926 ENTPR Car Door Operating Mechanism Art |
| 1950 ENTPR Safety Railway Car Door Operating Mechanism |
| 1923 ENTPR Car Door Operating Mechanism Art |