| 1 | FRPX | FRP Co. | added 4/1971; 1/1975; eliminated 4/1976 | | NAKINA |
| 2 | FRPX | Filtered Rosin Products Co. | added 10/1969; 4/1970; eliminated 4/1971 | | NAKINA |
| 3 | FRPX | R.J. Braden, Falling Rock Producing Co. | 1/1943-4/1947 | | NAKINA |
| 4 | FRPX | Filtered Rosin Products Co. | added 10/69; 4/70; eliminated 4/71 | | NRHS |
| 5 | FRPX | FRP Co. | added 4/71; 1/75; eliminated 4/76 | | NRHS |
| 6 | FRPX | *R.J. BRADEN, FALLING ROCK PRODUCING CO. | | | PWRC |
| 7 | FRPX | *FRP, CO. [FILTERED ROSIN PRODUCTS CO.] | | | PWRC |
