1 | OZCX | Ozark-Mahoning Co. | 1/1950-4/1970; eliminated 7/1972 | | NAKINA |
2 | OZCX | Ozark Chemical Co. | 7/1937-1/1941 (not listed); 1/1943-4/1947 | | NAKINA |
3 | OZCX | Ozark-Mahoning Co. | 1/52-4/70 | | NRHS |
4 | OZCX | OZARK CAR CORP. [OZARK-MAHONING CO.; OZARK CHEMICAL CO.] | | | PWRC |
5 | OZCX | OZARK-MAHONING CO | | | SCAC3 |