| 1 | RCW | Rail Cargo Wagon - Austria GmbH | | AT | VKM |
| 2 | RCWH | ROSE CITY WHOLESALE (1987) INC | | | SCAC3 |
| 3 | RCWO | ROCKWOOD INDUSTRIES INC | | | SCAC4 |
| 4 | RCWT | RIVER CITY TRANSPORTATION CORP | | | SCAC3 |
| 5 | RCWT | RANCHERS WELDING LTD | | | SCAC4 |
| 6 | RCWX | Royster Co. | added 10/1968; 4/1970-1/1975; eliminated 10/1976 | | NAKINA |
| 7 | RCWX | F.S. Royster Guano Co. | added 10/1959; 4/1961-10/1966; eliminated 10/1968 | | NAKINA |
| 8 | RCWX | F.S. Royster Guano Co. | 4/1938-10/1957 | | NAKINA |
| 9 | RCWX | Royster Chemical Works | eliminated 10/1959 | | NAKINA |
| 10 | RCWX | Royster Chemical Works | Apr-38 | | NRHS |
| 11 | RCWX | F.S. Royster Guano Co. | 1/52-10/57 | | NRHS |
| 12 | RCWX | Royster Chemical Works | eliminated 10/59 | | NRHS |
| 13 | RCWX | F.S. Royster Guano Co. | added 10/59; 4/61-10/66; eliminated 10/68 | | NRHS |
| 14 | RCWX | Royster Co. | added 10/68; 4/70-1/75 | | NRHS |
| 15 | RCWX | ROYSTER CO. [ROYSTER CHEMICAL WORKS; F. S. ROYSTER GUANO CO.] | | | PWRC |
| 16 | RCWX | ROYSTER GUANO CO, F S | | | SCAC3 |
| 17 | RCWZ | UP [(REAZ) CHICAGO & NORTH WESTERN TRANS CO] | | | PWRC |
| 18 | RCWZ | Union Pacific Railroad | | | RSRV |
| 19 | RCWZ | UNION PACIFIC RAILROAD COMPANY | | | SCAC4 |
