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
O& O2 O3 O4 O5 O6 O7 O8 O9 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OO OP OQ OR OS OT OU OV OW OX OY OZ
OHA OHB OHC OHD OHE OHF OHG OHH OHI OHJ OHK OHL OHM OHN OHO OHP OHR OHS OHT OHV OHW OHY
OHCC OHCD OHCN OHCR OHCX
1 OHCX Stauffer Chemical Co. — Eastern Branch added 4/1965; 7/1965 (not listed)   NAKINA
2 OHCX Old Hickory Chemical Co. 7/1932-4/1961; eliminated 1/1965   NAKINA
3 OHCX Old Hickory Chemical Co. 4/38-4/61; eliminated 1/65   NRHS
4 OHCX Stauffer Chemical Co. -- Eastern Branch added 4/65; 7/65   NRHS
5 OHCX STAUFFER CHEMICAL CO. - EASTERN BRANCH [OLD HICKORY CHEMICAL CO.]     PWRC