AGR
| Alabama and Gulf Coast | 8 |
ALM
| Arkansas Louisiana and Mississippi Railr | 3 |
AOK
| Arkansas-Oklahoma Railroad | 3 |
ATW
| Atlantic and Western | 6 |
BKTY
| Union Pacific Railroad Company | 127 |
CN
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 24 |
COER
| Crab Orchard & Egyptian | 2 |
CP
| Canadian Pacific Railway | 3 |
CSX
| CSX Railroad | 16 |
EEC
| East Erie Commercial Railroad | 13 |
FCRD
| First Coast Railway | 4 |
FRR
| Falls Road Railroad Company Incorporated | 1 |
GMRC
| Green Mountain RR | 1 |
GNRR
| Georgia Northeastern | 1 |
GTRA
| Golden Triangle Railroad | 5 |
HS
| H and S Railroad Company | 34 |
KCS
| Kansas City Southern | 7 |
KRR
| Kiamichi | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 1 |
LRS
| Laurinburg and Southern | 25 |
MEC
| Maine Central | 3 |
MP
| Missouri Pacific | 1 |
MSDR
| Knoxville & Holston River Railroad | 1 |
NS
| Norfolk Southern | 13 |
SMW
| St Marys Railway West LLC | 3 |
SOU
| Southern | 6 |
SP
| Southern Pacific | 3 |
SRN
| Sabine River & Northern | 12 |
WC
| Wisconsin Central | 5 |
WRWK
| Providence & Worchester Railroad | 1 |