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
- 443 more...
- ItemStruc005294 - Northern Pacific Engineering Drawing, Engine House at Walla Walla, Washington, 1950
- ItemStruc005295 - Northern Pacific Engineering Drawing, Engine House at Walla Walla, Washington, 1950
- ItemStruc005296 - Northern Pacific Engineering Drawing, Engine House at Walla Walla, Washington, 1950
- ItemStruc005297 - Northern Pacific Engineering Drawing, Engine House at Walla Walla, Washington, 1963
- ItemStruc005298 - Northern Pacific Engineering Drawing, Engine House at Walla Walla, Washington, 1950
- ItemStruc005300 - Northern Pacific Engineering Drawing, Water Facilities at Eureka, Washington, 1966
- ItemStruc005311 - Northern Pacific Engineering Drawing, Sanitary Toilet at Car Repair Track and Septic Tank with New Sewer for Depot at Olympia, Washington, 1955
- ItemStruc005312 - Northern Pacific Engineering Drawing, Sanitary Toilet at Car Repair Track and Septic Tank with New Sewer for Depot at Olympia, Washington, 1955
- ItemStruc005316 - Northern Pacific Engineering Drawing, Unnamed Structure at Noxon, Montana, 1957
- 859 more...