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
- 3 more...
- ItemBB020923 - Great Northern Engineering Drawing: Reinforcement Pin Girder/20, Bridge 12 - Ebey Slough, South of Marysville, Washington, undated
- ItemBB020924 - Great Northern Engineering Drawing: Slide Easer Bar Joints, Bridge 12 - Ebey Slough, South of Marysville, Washington, undated
- ItemBB020925 - Great Northern Engineering Drawing: Easer Bars Drawspan, Bridge 12 - Ebey Slough, South of Marysville, Washington, undated
- ItemBB020926 - Great Northern Engineering Drawing: Details Easer Bars, Bridge 12 - Ebey Slough, South of Marysville, Washington, undated
- ItemBB020927 - Great Northern Engineering Drawing: Details Easer Bars, Bridge 12 - Ebey Slough, South of Marysville, Washington, undated
- ItemBB020928 - Great Northern Engineering Drawing: Electrical Operating Mechanism, Bridge 12 - Ebey Slough, South of Marysville, Washington, undated
- ItemBB020929 - Great Northern Engineering Drawing: Locking Device - Draw Span, Bridge 12 - Ebey Slough, South of Marysville, Washington, undated
- ItemBB020930 - Great Northern Engineering Drawing: Details Lining Device, Bridge 12 - Ebey Slough, South of Marysville, Washington, undated
- ItemBB020931 - Great Northern Engineering Drawing: Latch Device Drawspan, Bridge 12 - Ebey Slough, South of Marysville, Washington, undated
- 3989 more...