ABOX
| TTX Company | 2 |
ACL
| Atlantic Coast Line | 1 |
ADN
| Ashley Drew & Northern | 1 |
AGLF
| Knoxville & Holston River Railroad | 1 |
ALAB
| Alabama Railroad | 16 |
ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
AOK
| Arkansas-Oklahoma Railroad | 4 |
ASAB
| Bay Line Railroad LLC | 1 |
ATW
| Atlantic and Western | 5 |
AWP
| Atlanta & West Point | 1 |
BAEX
| Andersons | 1 |
BCOL
| Canadian National Railways | 1 |
BKTY
| Union Pacific Railroad Company | 9 |
BM
| Boston & Maine | 2 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 13 |
BO
| Baltimore & Ohio | 17 |
CAGY
| Columbus & Greenville Railway | 2 |
CHV
| Chattahoochee Valley Ry | 1 |
CIBX
| CIT Group/Capital Finance, Inc | 1 |
CIRR
| Chattahoochee Industrial Railroad | 1 |
CMHX
| CarMath Incorporated | 2 |
CN
| Canadian National Railways | 1 |
CNA
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 16 |
CO
| Chesapeake & Ohio | 8 |
COER
| Crab Orchard & Egyptian | 4 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 2 |
CRR
| Clinchfield | 2 |
CSX
| CSX Railroad | 40 |
CUOH
| Columbus and Ohio River Railroad Company | 1 |
DH
| Delaware & Hudson | 2 |
DRGW
| Denver & Rio Grande Western | 1 |
DTS
| Detroit & Toledo ShoreLine | 1 |
DWC
| Canadian National Railways | 3 |
EEC
| East Erie Commercial Railroad | 2 |
EL
| Erie Lackawanna | 4 |
FBOX
| TTX Company | 2 |
FCRD
| First Coast Railway | 1 |
FEC
| Florida East Coast | 2 |
GA
| Georgia Railroad | 1 |
GACX
| General American Marks Company | 2 |
GC
| Georgia Central | 2 |
GMO
| Gulf Mobile & Ohio | 2 |
GN
| Great Northern | 4 |
GTW
| Grand Trunk Western | 4 |
GVSR
| Galveston Railroad L.P. | 1 |
HCRY
| Huron Central Railway | 1 |
HLMX
| Helm Financial Corporation | 3 |
HPJX
| Helm-Pacific Leasing | 1 |
HS
| H and S Railroad Company | 3 |
IC
| Illinois Central | 2 |
ICG
| Illinois Central Gulf | 1 |
IRRC
| Iowa R.R. Co. | 1 |
ITC
| Illinois Terminal Railroad | 2 |
KCS
| Kansas City Southern | 2 |
KELX
| Kellogg Company | 1 |
KXHR
| Knoxville & Holston River RR | 1 |
LN
| Louisville & Nashville | 6 |
LRS
| Laurinburg and Southern | 3 |
LV
| Lehigh Valley | 1 |
LW
| Louisville and Wadley Railway Company | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 3 |
MEC
| Maine Central | 3 |
MILW
| Milwaukee Road | 1 |
MP
| Missouri Pacific | 13 |
MQT
| Marquette Rail | 2 |
NOKL
| Northwestern Oklahoma | 11 |
NP
| Northern Pacific | 2 |
NS
| Norfolk Southern | 8 |
NW
| Norfolk & Western | 3 |
NWR
| Nashville & Western Railroad Corp. | 2 |
NYC
| New York Central | 20 |
PC
| Penn Central | 13 |
PRR
| Pennsylvania Railroad | 3 |
RBBQ
| Chicago, Burlington and Quincy Reefers | 1 |
RBOX
| Railbox Company | 6 |
RDG
| Reading Railroad | 1 |
RJCM
| R.J. Corman Railroad Company/ Memphis Li | 1 |
SBD
| Seaboard System | 27 |
SCL
| Seaboard Coast Line | 4 |
SLSF
| Saint Louis-San Francisco | 2 |
SOU
| Southern | 7 |
SP
| Southern Pacific | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 4 |
TBOX
| TTX Company | 24 |
UCRY
| Utah Central | 1 |
UP
| Union Pacific Railroad Company | 5 |
WC
| Wisconsin Central | 1 |
WP
| Western Pacific | 10 |
WSOR
| Wisconsin & Southern | 2 |