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
D D& D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DY DZ
D&C D&D D&H D&I D&M D&N D&R D&S D&T D&W
D&RG
1 D&RG Denver & Rio Grande Western R.R. Co. 7/1932   NAKINA
2 D&RG Denver & Rio Grande Western R.R. System 7/1923   NAKINA
3 D&RG Denver & Rio Grande Western R.R. System 23-Jul   NRHS
4 D&RG DENVER & RIO GRANDE WESTERN RAILROAD     PWRC
5 D&RGW Denver & Rio Grande Western R.R. (Co.) 7/1930-10/1966   NAKINA
6 D&RGW Denver & Rio Grande Western R.R. 4/38-10/66   NRHS
7 D&RGW DENVER & RIO GRANDE WESTERN RAILROAD     PWRC