| 1929 GEN RAILWAY SIGNAL CO Magnetic Car Retarder |
| 1926 KELLENBERGER KEITH Car Retarder Patent |
| 1964 BROWN Automatic Car Retarder Patent Print |
| 1957 GEN RAILWAY SIGNAL CO Railway Car Retarder |
| 1936 GEN Railway Car Retarder Control System Art |
| 1930 UNION SWITCH SIGNAL CO Railway Car Retarder |
| 1960 PAUL Bar Shaped Car Retarder Directcontrol Type |
| 1962 GEN Automatic Car Retarder Control System |
| 1929 LAFFEY WILLIAM Car Retarder Patent Print |
| 1965 DEVANEY Railroad Car Retarder Patent Print |
| 1957 MARSH Railway Car Retarder Track Brake Type |
| 1933 CRAGO Railway Car Retarder Patent Print Art |
| 1957 FIELD Railway Car Retarder Patent Print Art |
| 1950 CAINE STEEL COMPANY Car Retarder Patent |
| 1931 FERNAND Railway Car Retarder Patent Print |
| 1935 BROWN Magnetic Car Retarder Patent Print |
| 1934 BROWN Car Retarder For Railroads Patent |
| 1957 ALBRIGHTON Car Retarder Control System Art |
| 1946 UNION SWITCH SIGNAL CO Railway Car Retarder |
| 1965 LYLE Car Retarder Control System Patent |
| 1965 AMERICAN BRAKE SHOE CO Railroad Car Retarder |
| 1935 GEN RAILWAY SIGNAL CO Car Retarder Railroads |
| 1957 GEN Railway Car Retarder Track Brake Type |
| 1929 ROSS Magnetic Car Retarder Patent Print Art |
| 1946 CLARK Railway Car Retarder Patent Print Art |
| 1930 HOWARD LEMUEL Car Retarder Patent Print Art |
| 1937 UNION Car Retarder Control Testing Means |
| 1964 GEN SIGNAL CORP Automatic Car Retarder Art |
| 1932 LIVINGSTON Railway Car Retarder Patent |
| 1965 WILLIAMSON Car Retarder For Railroads Art |
| 1960 AMERICAN BRAKE SHOE CO Car Retarder Patent |
| 1966 MARS Adjustable Car Retarder Patent Print |
| 1933 AUGUST Eddy Current Car Retarder Patent |
| 1930 BONE HERBERT Railway Car Retarder Patent |
| 1932 BROWN Car Retarder For Railroads Patent |
| 1930 MCWHIRTER Railway Car Retarder Patent Print |
| 1962 DASBURG Automatic Car Retarder Control System |
| 1955 LOWE Railroad Car Impact Retarder Patent |
| 1957 LOWE Railway Car Impact Retarder Patent |
| 1936 HOWE Railway Car Retarder Control System |
| 1932 VARBLE JOHN Car Retarder Patent Print Art |
| 1960 DEVANEY JOHN Car Retarder Patent Print Art |
| 1931 UNION SWITCH SIGNAL CO Railway Car Retarder |
| 1926 UNION SWITCH & SIGNAL CO Car Retarder Art |
| 1932 GEN RAILWAY SIGNAL CO Car Retarder Railroads |
| 1935 UNION SWITCH SIGNAL CO Car Retarder Structure |
| 1932 UNION SWITCH SIGNAL CO Railway Car Retarder |
| 1959 BODKIN Railway Car Retarder Patent Print |
| 1957 GEN RAILWAY SIGNAL CO Car Retarder Control System |
| 1932 VARBLE Car Retarder Patent Print Art |
| 1950 BELTMAN GEORGE Car Retarder Patent Print |
| 1935 BROWN Car Retarder For Railroads Patent |
| 1933 OBERBAUFORSCHUNG Eddy Current Car Retarder |
| 1933 UNION SWITCH SIGNAL CO Railway Car Retarder |
| 1966 GALLACHER Railroad Car Retarder System Art |
| 1966 AMERICAN BRAKE SHOE CO Adjustable Car Retarder |
| 1935 BONE Car Retarder Structure Patent Print |
| 1937 LIVINGSTON Car Retarder Control Testing Means |
| 1948 BODKIN Railway Car Retarder Patent Print |
| 1935 GEN RAILWAY SIGNAL CO Magnetic Car Retarder |
| 1934 GEN RAILWAY SIGNAL CO Car Retarder Railroads |
| 1931 CLAUSEN Railway Car Retarder Patent Print |
| 1965 GEN SIGNAL CORP Car Retarder Railroads Art |
| 1925 SHEPARD Railway Car Retarder Patent Print |
| 1930 UNION SWITCH & SIGNAL CO Car Retarder Art |
| 1965 GEN SIGNAL CORP Car Retarder Control System |