Real world company prefixes

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M n O P Q R S T U V W X Y Z Ø
S& S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ
SP& SPA SPB SPC SPD SPE SPF SPG SPH SPI SPJ SPK SPL SPM SPN SPO SPP SPQ SPR SPS SPT SPU SPV SPW SPX SPY SPZ
SP&S
1 SP&S Spokane, Portland & Seattle Ry. Co. 7/1923-4/1938   NAKINA
2 SP&S Spokane, Portland & Seattle Ry. Co. Apr-38   NRHS
3 SP&S SPOKANE, PORTLAND & SEATTLE RWY. CO.     PWRC