Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3003 - Maintenance Facilities
- 1050 more...
- ItemStruc007868 - Northern Pacific Engineering Drawing, Diesel Fueling Facilities at Helena, Montana, 1957
- ItemStruc007869 - Northern Pacific Engineering Drawing, Diesel Fueling Facilities at Helena, Montana, 1953
- ItemStruc007870 - Northern Pacific Engineering Drawing, Diesel Fueling Facilities at Helena, Montana, 1953
- ItemStruc007871 - Northern Pacific Engineering Drawing, Diesel Fueling Facilities at Helena, Montana, 1953
- ItemStruc007872 - Northern Pacific Engineering Drawing, Diesel Fueling Facilities at Missoula, Montana, undated
- ItemStruc007873 - Northern Pacific Engineering Drawing, Diesel Fueling Facilities at Missoula, Montana, 1972
- ItemStruc007874 - Northern Pacific Engineering Drawing, Diesel Fueling Facilities at Missoula, Montana, 1972
- ItemStruc007875 - Northern Pacific Engineering Drawing, Diesel Fueling Facilities at Missoula, Montana, 1972
- ItemStruc007876 - Northern Pacific Engineering Drawing, Diesel Fueling Facilities at Missoula, Montana, undated
- 252 more...