AA
| Ann Arbor | 1 |
ACY
| Akron, Canton & Youngstown | 3 |
ALS
| Alton & Southern Railway | 2 |
AM
| Arkansas & Missouri | 1 |
AR
| Aberdeen and Rockfish | 1 |
ATSF
| Atchison Topeka & Santa Fe | 15 |
BAP
| Butte Anaconda & Pacific | 1 |
BGFX
| Barnabus Group Foundation | 1 |
BLE
| Bessemer & Lake Erie | 1 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 19 |
BNSF
| BNSF Railway | 1 |
BO
| Baltimore & Ohio | 11 |
BRC
| Belt Railway of Chicago | 1 |
BSVY
| Boone & Scenic Valley Railroad | 1 |
CBQ
| Chicago Burlington & Quincy | 11 |
CC
| Chicago Central & Pacific | 1 |
CEI
| Chicago & Eastern Illinois | 4 |
CG
| Central Of Georgia | 1 |
CGW
| Chicago Great Western | 2 |
CHW
| Chesapeake Western | 1 |
CIL
| Chicago Indianapolis & Louisville (Monon | 1 |
CIM
| Chicago And Illinois Midland | 2 |
CNJ
| Central Rail Road of New Jersey | 4 |
CNW
| Chicago & Northwestern | 8 |
CO
| Chesapeake & Ohio | 5 |
CP
| Canadian Pacific Railway | 2 |
CR
| Conrail | 5 |
CRIP
| Chicago Rock Island & Pacific | 8 |
CRR
| Clinchfield | 1 |
CS
| Colorado & Southern | 1 |
CSS
| Chicago South Shore And South Bend | 1 |
CSX
| CSX Railroad | 15 |
CWP
| Chicago West Pullman & Southern | 2 |
DH
| Delaware & Hudson | 5 |
DMIR
| Duluth Missabe & Iron Range | 1 |
DODX
| Department Of Defense | 2 |
DRGW
| Denver & Rio Grande Western | 9 |
DS
| Durham & Southern | 1 |
DSL
| Denver & Salt Lake | 1 |
DTI
| Detroit Toledo & Ironton | 4 |
DTS
| Detroit & Toledo ShoreLine | 3 |
EJE
| Elgin Joliet and Eastern | 1 |
EL
| Erie Lackawanna | 13 |
ERIE
| Erie Railroad | 1 |
ETL
| Essex Terminal Railway Company | 1 |
FEC
| Florida East Coast | 2 |
FWD
| Fort Worth & Denver | 1 |
GBW
| Green Bay & Western | 2 |
GECX
| General Electric Company | 1 |
GMO
| Gulf Mobile & Ohio | 2 |
GN
| Great Northern | 1 |
GTW
| Grand Trunk Western | 2 |
GW
| GW | 1 |
HOS
| Hoosier Southern Railroad | 1 |
HVRX
| Heber Valley Historic Railroad | 1 |
IAIS
| Iowa Interstate | 1 |
IANR
| Iowa Northern Ry | 2 |
IATR
| Iowa Traction Railroad Company | 1 |
IC
| Illinois Central | 3 |
ICG
| Illinois Central Gulf | 3 |
IHB
| Indiana Harbor Belt | 1 |
INRD
| Indiana Railroad | 1 |
INT
| Norfolk Southern Railway Company | 1 |
KCS
| Kansas City Southern | 3 |
LBR
| Lowville and Beaver River Railroad Compa | 1 |
LC
| Lancaster & Chester | 1 |
LI
| Long Island Rail Road Company | 5 |
LN
| Louisville & Nashville | 9 |
LPRX
| LPRX | 1 |
LV
| Lehigh Valley | 2 |
MH
| Mount Hood Railroad | 1 |
MILW
| Milwaukee Road | 12 |
MKT
| Missouri-Kansas-Texas | 2 |
MP
| Missouri Pacific | 15 |
MR
| McCloud Railway Company | 3 |
MRL
| Montana Rail Link | 2 |
MRS
| Manufacturers Railway | 2 |
MSTL
| Minneapolis & St Louis | 1 |
NKP
| Nickel Plate | 1 |
NP
| Northern Pacific | 1 |
NRI
| Nebkota Railway Incorporated | 1 |
NW
| Norfolk & Western | 14 |
NYC
| New York Central | 2 |
OCE
| Oregon California & Eastern | 2 |
OTVR
| Otter Tail Valley Railroad Company | 1 |
PC
| Penn Central | 19 |
PRR
| Pennsylvania Railroad | 1 |
PS
| Pittsburg and Shawmut Railroad Company | 4 |
RDG
| Reading Railroad | 2 |
RGEX
| Royal Gorge Industries LLC | 1 |
SAL
| Seaboard Air Line | 1 |
SCL
| Seaboard Coast Line | 1 |
SFS
| Santa Fe Southern | 1 |
SLSF
| Saint Louis-San Francisco | 2 |
SOO
| Soo Line | 2 |
SOU
| Southern | 6 |
SP
| Southern Pacific | 25 |
SSW
| St Louis Southwestern (Cotton Belt) | 4 |
TCG
| Tucson Cornelia and Gila Bend Railroad Company | 1 |
TRRA
| Terminal RR of St Louis | 1 |
TT
| Toledo Terminal | 1 |
TTRR
| TTRR | 1 |
UP
| Union Pacific Railroad Company | 19 |
WAB
| Wabash | 2 |
WC
| Wisconsin Central | 1 |
WM
| Western Maryland | 1 |
WP
| Western Pacific | 15 |
WVRR
| Whitewater Valley Railroad | 4 |