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
- 2182 more...
- ItemBB024714 - Great Northern Engineering Drawing: Shim Plan, Bridge 5.1, South of Henley, Oregon, undated
- ItemBB024716 - Great Northern Engineering Drawing: Elevation Plan, Bridge 5.1, South of Henley, Oregon, 1931
- ItemBB024717 - Great Northern Engineering Drawing: General Plan, Bridge 5.3, South of Henley, Oregon, undated
- ItemBB024718 - Great Northern Engineering Drawing: Pier Details, Bridge 5.3, South of Henley, Oregon, undated
- ItemBB024719 - Great Northern Engineering Drawing: Add Flume Protection, Bridge 5.3, South of Henley, Oregon, undated
- ItemBB024720 - Great Northern Engineering Drawing: Add Flume Protection, Bridge 5.3, South of Henley, Oregon, undated
- ItemBB024721 - Great Northern Engineering Drawing: General Plan, Bridge 5.3, South of Henley, Oregon, 1939
- ItemBB024722 - Great Northern Engineering Drawing: Deck Plan, Bridge 5.3, South of Henley, Oregon, 1963
- ItemBB024723 - Great Northern Engineering Drawing: Shop Plan - 50 Foot Beam, Bridge 5.3, South of Henley, Oregon, undated
- 1810 more...