ABOX
| TTX Company | 1 |
ACL
| Atlantic Coast Line | 2 |
AG
| Galveston Railroad L.P. | 1 |
ASAB
| Bay Line Railroad LLC | 1 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
ATW
| Atlantic and Western | 1 |
AWP
| Atlanta & West Point | 3 |
BAR
| Bangor & Aroostook | 1 |
BKTY
| Union Pacific Railroad Company | 1 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 61 |
BO
| Baltimore & Ohio | 4 |
CA
| Chesapeake & Albemarle | 2 |
CBQ
| Chicago Burlington & Quincy | 445 |
CC
| Chicago Central & Pacific | 1 |
CEI
| Chicago & Eastern Illinois | 1 |
CG
| Central Of Georgia | 1 |
CGW
| Chicago Great Western | 2 |
CHP
| Ferrocarriles Nacionales de Mexico | 2 |
CN
| Canadian National Railways | 2 |
CNW
| Chicago & Northwestern | 6 |
CO
| Chesapeake & Ohio | 4 |
CP
| Canadian Pacific Railway | 14 |
CR
| Conrail | 5 |
CRDX
| Chicago Freight Car Leasing Company | 1 |
CRR
| Clinchfield | 1 |
CS
| Colorado & Southern | 3 |
DRGW
| Denver & Rio Grande Western | 3 |
DSSA
| Duluth, South Shore & Atlantic | 1 |
DTI
| Detroit Toledo & Ironton | 2 |
DWC
| Canadian National Railways | 1 |
EJE
| Elgin Joliet and Eastern | 3 |
FEC
| Florida East Coast | 1 |
FWD
| Fort Worth & Denver | 2 |
GMO
| Gulf Mobile & Ohio | 4 |
GN
| Great Northern | 27 |
HERB
| HERB | 1 |
KCS
| Kansas City Southern | 3 |
LN
| Louisville & Nashville | 11 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MEC
| Maine Central | 2 |
MILW
| Milwaukee Road | 5 |
MISS
| Mississippian Railway Cooperative Incorporated | 1 |
MNS
| Minneapolis Northfield & Southern | 1 |
MON
| Monon Route | 2 |
MP
| Missouri Pacific | 30 |
NIRX
| General Electric Rail Services | 2 |
NP
| Northern Pacific | 14 |
NW
| Norfolk & Western | 3 |
NYC
| New York Central | 3 |
PC
| Penn Central | 7 |
PLE
| Pittsburgh & Lake Erie | 2 |
PRR
| Pennsylvania Railroad | 5 |
QGRY
| Quebec Gatineau Railway Incorporated | 1 |
RBBN
| Burlington Northern | 4 |
RBBQ
| Chicago, Burlington and Quincy Reefers | 18 |
RBOX
| Railbox Company | 3 |
RDG
| Reading Railroad | 2 |
RI
| RI | 21 |
ROCK
| Rock Island | 5 |
SAL
| Seaboard Air Line | 1 |
SBD
| Seaboard System | 1 |
SLSF
| Saint Louis-San Francisco | 2 |
SOO
| Soo Line | 10 |
SOU
| Southern | 10 |
SP
| Southern Pacific | 2 |
SPS
| Spokane Portland & Seattle | 4 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TPW
| Toledo Peoria & Western | 2 |
UP
| Union Pacific Railroad Company | 26 |
USLX
| General Electric Rail Services | 2 |
WA
| Washington & Atlanta Railroad | 1 |
WAB
| Wabash | 2 |
WM
| Western Maryland | 1 |
WP
| Western Pacific | 1 |
WQ
| WQ | 2 |