Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 1806 more...
- ItemBB024312 - Great Northern Engineering Drawing: Piers 2 and 3, Bridge 20 - Undercrossing, North of Clayton, Washington, undated
- ItemBB024313 - Great Northern Engineering Drawing: Girder Spans, Bridge 20 - Undercrossing, North of Clayton, Washington, undated
- ItemBB024314 - Great Northern Engineering Drawing: Miscellaneous Steel Details, Bridge 20 - Undercrossing, North of Clayton, Washington, undated
- ItemBB024315 - Great Northern Engineering Drawing: Deck Slabs, Bridge 20 - Undercrossing, North of Clayton, Washington, undated
- ItemBB024316 - Great Northern Engineering Drawing: Bar List, Bridge 20 - Undercrossing, North of Clayton, Washington, undated
- ItemBB024317 - Great Northern Engineering Drawing: Drainage Details, Bridge 20 - Undercrossing, North of Clayton, Washington, undated
- ItemBB024318 - Great Northern Engineering Drawing: Shop Plan - Girder Beams, Bridge 20 - Undercrossing, North of Clayton, Washington, undated
- ItemBB024319 - Great Northern Engineering Drawing: Shop Plan - Girder Span, Bridge 20 - Undercrossing, North of Clayton, Washington, undated
- ItemBB024320 - Great Northern Engineering Drawing: Shop Plan - Ball Plates, Bridge 20 - Undercrossing, North of Clayton, Washington, undated
- 2186 more...