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 3004 - Maintenance of Way support
- ItemStruc001181 - Northern Pacific Engineering Drawing, Section House at Saint Anthony, North Dakota, 1970
- ItemStruc001187 - Northern Pacific Engineering Drawing, Rail Welding Plant Building at Laurel, Montana, 1971
- ItemStruc001322 - Northern Pacific Engineering Drawing, Rail Welding Plant Building at Laurel, Montana, 1970
- ItemStruc001323 - Northern Pacific Engineering Drawing, Rail Welding Plant Building at Laurel, Montana, 1970
- ItemStruc002496 - Northern Pacific Engineering Drawing, Section Tool House at Pe Ell, Washington, 1969
- ItemStruc002497 - Northern Pacific Engineering Drawing, Section Tool House at Pe Ell, Washington, 1969
- 197 more...