Railroad Archives Online
- FondsD0027 - Timothy Miller Collection
- Cyfres004 - Northern Pacific Railroad Company
- Is-gyfres009 - Engineering Records
- 008 - Physical plant drawing
- 004 - Maintenance of Way support
- EitemStruc001181 - Northern Pacific Engineering Drawing, Section House at Saint Anthony, North Dakota, 1970
- EitemStruc001187 - Northern Pacific Engineering Drawing, Rail Welding Plant Building at Laurel, Montana, 1971
- EitemStruc001322 - Northern Pacific Engineering Drawing, Rail Welding Plant Building at Laurel, Montana, 1970
- EitemStruc001323 - Northern Pacific Engineering Drawing, Rail Welding Plant Building at Laurel, Montana, 1970
- EitemStruc002496 - Northern Pacific Engineering Drawing, Section Tool House at Pe Ell, Washington, 1969
- 198 mwy...