AMTK
| Amtrak | 1 |
ATSF
| Atchison Topeka & Santa Fe | 10 |
AW
| AW | 1 |
BAP
| Butte Anaconda & Pacific | 1 |
BLE
| Bessemer & Lake Erie | 1 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 8 |
BO
| Baltimore & Ohio | 4 |
CBQ
| Chicago Burlington & Quincy | 6 |
CGW
| Chicago Great Western | 1 |
CMSL
| Cape May Seashore Line | 1 |
CNJ
| Central Rail Road of New Jersey | 1 |
CNSM
| CHICAGO NORTH SHORE & MILWAUKEE RWY | 2 |
CNW
| Chicago & Northwestern | 6 |
CO
| Chesapeake & Ohio | 2 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 4 |
CRIP
| Chicago Rock Island & Pacific | 5 |
CS
| Colorado & Southern | 16 |
CTS
| Cumbres & Toltec Scenic | 2 |
DH
| Delaware & Hudson | 2 |
DIM
| DIM | 5 |
DLW
| Delaware Lackawanna & Western | 3 |
DRG
| DRG | 2 |
DRGW
| Denver & Rio Grande Western | 59 |
DSL
| Denver & Salt Lake | 8 |
EL
| Erie Lackawanna | 7 |
FWD
| Fort Worth & Denver | 2 |
GWR
| Great Western Railway Company | 2 |
IC
| Illinois Central | 2 |
ITC
| Illinois Terminal Railroad | 1 |
LCS
| LCS | 2 |
LN
| Louisville & Nashville | 1 |
LV
| Lehigh Valley | 1 |
MILW
| Milwaukee Road | 2 |
MON
| Monon Route | 1 |
MP
| Missouri Pacific | 3 |
NDEM
| NDEM | 1 |
NH
| New Haven | 1 |
NJTR
| NJ Transit Rail Operations | 1 |
NKP
| Nickel Plate | 1 |
NP
| Northern Pacific | 3 |
NW
| Norfolk & Western | 1 |
PC
| Penn Central | 9 |
PE
| Peoria & Eastern | 1 |
RDG
| Reading Railroad | 1 |
RGS
| Rio Grande Southern | 10 |
RR
| Raritan River | 1 |
SCL
| Seaboard Coast Line | 1 |
SLC
| San Luis Central Railroad Company | 2 |
SOO
| Soo Line | 2 |
SP
| Southern Pacific | 5 |
TP
| Texas & Pacific | 1 |
UP
| Union Pacific Railroad Company | 17 |