ATSF
| Atchison Topeka & Santa Fe | 1 |
BN
| Burlington Northern | 30 |
BO
| Baltimore & Ohio | 1 |
CBQ
| Chicago Burlington & Quincy | 2 |
CNW
| Chicago & Northwestern | 2 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 1 |
DH
| Delaware & Hudson | 2 |
GN
| Great Northern | 2 |
KCS
| Kansas City Southern | 3 |
MILW
| Milwaukee Road | 12 |
MKT
| Missouri-Kansas-Texas | 2 |
MP
| Missouri Pacific | 1 |
NKP
| Nickel Plate | 1 |
NW
| Norfolk & Western | 1 |
OCE
| Oregon California & Eastern | 1 |
PGE
| Pacific Great Eastern | 4 |
PRR
| Pennsylvania Railroad | 1 |
PSBR
| PSBR | 1 |
SMVR
| SMVR | 2 |
SNCT
| Seattle & North Coast R.R. Co. | 2 |
SOO
| Soo Line | 2 |
WM
| Western Maryland | 2 |
WP
| Western Pacific | 2 |