DLMX
| Daylight Locomotives and Machine Works Incorporated | 7 |
DOTX
| USDOT/Federal Railroad Administration | 5 |
GPEX
| General American Pfaudler | 2 |
MILW
| Milwaukee Road | 41 |
NYC
| New York Central | 1 |
QTLR
| QTLR | 2 |
RGSX
| RGSX | 1 |
SWF
| SWF | 2 |
TCRT
| TCRT | 3 |
UP
| Union Pacific Railroad Company | 5 |
UPP
| Union Pacific Passenger | 6 |
USSD
| USSD | 1 |