| 1 | SFCX | Sheffield Farms Co., Inc. | 7/1930-1/1950 | | NAKINA |
| 2 | SFCX | Southern Fertilizer and Chemical Co. | added 1/1955; 10/1957; eliminated 4/1958 | | NAKINA |
| 3 | SFCX | Safecar Railcar Service LLC | added 10/2003; eliminated 4/2004; 7/2005 (not listed) | | NAKINA |
| 4 | SFCX | Sheffield Farms Co., Inc. | Apr-38 | | NRHS |
| 5 | SFCX | Southern Fertilizer and Chemical Co. | Oct-57 | | NRHS |
| 6 | SFCX | *SOUTHERN FERLILIZER & CHEMICAL CO. [SHEFFIELD FARMS CO. INC.] | | | PWRC |
| 7 | SFCX | +SAFECAR RAILCAR SERVICE LLC | | | PWRC |
| 8 | SFCX | SAFECAR RAILCAR SERVICES LLC | | | SCAC4 |
