| 1937 HARBERT Dump Car Door Operating Mechanism |
| 1922 WINE WILLIAM Car Door Mechanism Patent |
| 1958 PULLMAN Ballast Car Door Operating Mechanism |
| 1920 ARGYLE Car Door Operating Mechanism Patent |
| 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 |
| 1930 WINE WILLIAM Car Door Mechanism Patent |
| 1942 ENTPR Hopper Car Door Operating Mechanism |
| 1951 STANDARD Railway Car Door Operating Mechanism |
| 1932 WINE WILLIAM Car Door Mechanism Patent |
| 1924 PRESSED STEEL CAR CO Door Supporting 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 |
| 1952 DOREY Car Door Locking Mechanism Patent |
| 1929 ZIMMER Car Door Operating Mechanism Patent |
| 1929 ENTPR Dump Car Door Operating Mechanism Art |
| 1966 UNITCAST Railway Hopper Car Door Locking Mechanism |
| 1943 SMALL Car Door Actuating Mechanism Patent |
| 1922 ARGYLE Dump Car Door Operating Mechanism |
| 1949 ENTPR Dump Car Door Operating Mechanism Art |
| 1920 ENTPR Car Door Operating Mechanism Art |
| 1924 KADEL BYERS Car Door Mechanism Patent Print |
| 1926 ENTPR Dump Car Door Operating Mechanism Art |
| 1927 AMERICAN Lock Car Door Operating Mechanism |
| 1925 CREMEAN Car Door Mechanism Patent Print Art |
| 1929 ENTPR Car Door Operating Mechanism Art |
| 1922 TREVOR Car Door Operating Mechanism Patent |
| 1922 KADEL BYERS Car Door Mechanism Patent Print |
| 1923 ANDREW Car Door Operating Mechanism Patent |
| 1958 FAVERTY Ballast Car Door Operating Mechanism |
| 1942 BEAUCHAMP Car Door Lifting Mechanism Patent |
| 1929 ARGYLE Dump Car Door Operating Mechanism |
| 1921 THOMAS Car Door Operating Mechanism Patent |
| 1929 CYRUS HANKINS Car Door Mechanism Patent |
| 1951 GOODWIN Railway Car Door Supporting Mechanism |
| 1966 JAY R SHEESLEY Hopper Car Door Actuating Mechanism |
| 1931 TATUM Hopper Car Door Securing Mechanism |
| 1925 ANDERSON Car Door Operating Mechanism Art |
| 1921 ARGYLE Dump Car Door Operating Mechanism |
| 1923 NAT DUMP CAR Dump Car Door Latching Mechanism |
| 1952 ENTPR Car Door Locking Mechanism Art Print |
| 1926 ARGYLE Car Door Operating Mechanism Patent |
| 1944 BEAUCHAMP Car Door Mechanism Patent Print |
| 1942 YOUNGSTOWN Car Door Lifting Mechanism Art |
| 1925 ENTPR Car Door Operating Mechanism Art |
| 1925 WINE RAILWAY APPLIANCE Car Door Mechanism |
| 1949 ZIMMER Dump Car Door Operating Mechanism |
| 1922 AMERICAN Car Door Operating Mechanism Art |
| 1921 ENTPR Dump Car Door Operating Mechanism |
| 1950 ORVILLE Railway Car Door Mechanism Patent |
| 1922 ENTPR Car Door Locking Mechanism Art Print |
| 1923 DAVID Dump Car Door Latching Mechanism Art |
| 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 |
| 1943 RAILWAY Car Door Actuating Mechanism Art |
| 1926 KADEL BYERS Car Door Mechanism Patent Print |
| 1925 HANNAFORD Car Door Mechanism Patent Print |
| 1929 PRESSED STEEL CAR CO Door Supporting Mechanism |
| 1950 ENTPR Safety Railway Car Door Operating Mechanism |
| 1923 ENTPR Car Door Operating Mechanism Art |
| 1966 FLOEHR Railway Hopper Car Door Locking Mechanism |
| 1923 STANDARD STEEL CAR Door Locking Mechanism |