ADN
| Ashley Drew & Northern | 1 |
AGR
| Alabama and Gulf Coast | 3 |
AM
| Arkansas & Missouri | 1 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BCOL
| Canadian National Railways | 3 |
BM
| Boston & Maine | 1 |
BNSF
| BNSF Railway | 1 |
CMHX
| CarMath Incorporated | 2 |
CN
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 4 |
CP
| Canadian Pacific Railway | 1 |
CPAA
| Canadian Pacific Railway | 1 |
CR
| Conrail | 4 |
CRLE
| Coe Rail Incorporated | 2 |
CSX
| CSX Railroad | 11 |
CV
| Central Vermont | 3 |
DRGW
| Denver & Rio Grande Western | 2 |
DWC
| Canadian National Railways | 2 |
EEC
| East Erie Commercial Railroad | 2 |
FBOX
| TTX Company | 1 |
FGLK
| Finger Lakes Railway | 2 |
FSRR
| FerroSur | 1 |
FXE
| Ferromex | 6 |
GMRC
| Green Mountain RR | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 4 |
GTW
| Grand Trunk Western | 1 |
HS
| H and S Railroad Company | 8 |
IATR
| Iowa Traction Railroad Company | 1 |
ICG
| Illinois Central Gulf | 2 |
KCS
| Kansas City Southern | 1 |
KXHR
| Knoxville & Holston River RR | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 3 |
LVRC
| Lamoille Valley | 2 |
LW
| Louisville and Wadley Railway Company | 1 |
MB
| Meridian & Bigbee | 1 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 10 |
MEC
| Maine Central | 3 |
MP
| Missouri Pacific | 4 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 1 |
NW
| Norfolk & Western | 3 |
NYC
| New York Central | 3 |
PDRR
| Pee Dee River RR | 1 |
PRL
| Penn Eastern Rail Lines Incorporated | 2 |
PRR
| Pennsylvania Railroad | 4 |
RBMN
| Reading Blue Mountain & Northern | 1 |
RBOX
| Railbox Company | 1 |
SBD
| Seaboard System | 2 |
SLR
| St Lawrence & Atlantic | 1 |
SOO
| Soo Line | 2 |
SOU
| Southern | 3 |
SP
| Southern Pacific | 7 |
SRN
| Sabine River & Northern | 1 |
SRNJ
| Southern Railroad Company of New Jersey | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
UP
| Union Pacific Railroad Company | 4 |
WLO
| Waterloo Railway Company (Illinois Central) | 2 |
YKR
| York Rail | 2 |