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 3001 - Bridges
- 831 more...
- ItemBB015107 - Northern Pacific Engineering Drawing: Raising Plan, Bridge 21 - Highway, West of Dryad, Washington, undated
- ItemBB015108 - Northern Pacific Engineering Drawing: Concrete Detail/Beam/Material, Bridge 21 - Highway, West of Dryad, Washington, undated
- ItemBB015109 - Northern Pacific Engineering Drawing: Shop Plan - Erection Plan, Bridge 21 - Highway, West of Dryad, Washington, undated
- ItemBB015110 - Northern Pacific Engineering Drawing: Shop Plan - Girder, etc., Bridge 21 - Highway, West of Dryad, Washington, undated
- ItemBB015111 - Northern Pacific Engineering Drawing: Shop Plan - Girder/Braces, Bridge 21 - Highway, West of Dryad, Washington, undated
- ItemBB015112 - Northern Pacific Engineering Drawing: General Plan, Bridge 5 - Highway, South of Zangar Junction, Washington, 1932
- ItemBB015113 - Northern Pacific Engineering Drawing: General Detail Steel Girder Span, Bridge 5 - Highway, South of Zangar Junction, Washington, undated
- ItemBB015114 - Northern Pacific Engineering Drawing: Detail Double Bents/Beam/Material, Bridge 5 - Highway, South of Zangar Junction, Washington, undated
- ItemBB015115 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 5 - Highway, South of Zangar Junction, Washington, 1965
- 6888 more...