AEFR
| Aurora Elgin and Fox River Electric | 2 |
BART
| BART | 1 |
CC
| Chicago Central & Pacific | 4 |
CCT
| Central California Traction Company | 1 |
CNW
| Chicago & Northwestern | 4 |
CP
| Canadian Pacific Railway | 1 |
CWI
| Chicago and Western Indiana | 2 |
DC
| Delray Connecting Railroad Company | 2 |
DODX
| Department Of Defense | 6 |
DRGW
| Denver & Rio Grande Western | 6 |
DSNG
| Durango & Silverton Narrow Gauge Railroa | 8 |
EP
| EP | 4 |
HZGX
| Herzog Contracting Corporation | 1 |
METW
| Municipality of East Troy Wisc. | 1 |
NCPC
| NCPC | 6 |
NN
| Northern Nevada Railroad Corporation | 1 |
OAE
| OAE | 7 |
OEMW
| OEMW | 1 |
PLA
| Pacific Locomotive Association [Niles Canyon Railway] | 14 |
POTB
| Port of Tillamook Bay | 1 |
SN
| Sacramento Northern | 1 |
SP
| Southern Pacific | 2 |
SRRY
| SRRY | 2 |
SRYC
| Sierra Railway Company of California | 2 |
SSRR
| Sacramento Southern | 2 |
TMER
| TMER | 1 |
TPL
| TPL | 1 |
TTX
| TTX Company | 2 |
UP
| Union Pacific Railroad Company | 1 |
USN
| United States Navy | 5 |
VT
| Virginia & Truckee | 3 |
WP
| Western Pacific | 9 |
WSLC
| WSLC | 3 |
YSL
| YSL | 1 |