Railroad Archives Online
- FondiD0027 - Timothy Miller Collection
- Serija004 - Northern Pacific Railroad Company
- Podserija009 - Engineering Records
- 008 - Physical plant drawing
- 001 - Bridges
- 652 more...
- DokumentBB014922 - Northern Pacific Engineering Drawing: Piers 2/5, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- DokumentBB014923 - Northern Pacific Engineering Drawing: Abutment 6, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- DokumentBB014924 - Northern Pacific Engineering Drawing: Bar List, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- DokumentBB014925 - Northern Pacific Engineering Drawing: Bar Type/Dimension, etc., Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- DokumentBB014926 - Northern Pacific Engineering Drawing: Girder Span, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- DokumentBB014927 - Northern Pacific Engineering Drawing: Girder Span, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- DokumentBB014928 - Northern Pacific Engineering Drawing: Girder Span/Shoe/Miscellaneous, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- DokumentBB014929 - Northern Pacific Engineering Drawing: Truss Span/Stress Sheet, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- DokumentBB014930 - Northern Pacific Engineering Drawing: Truss Span, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- 7067 more...