Railroad Archives Online
- FondD0027 - Timothy Miller Collection
- Sorozat004 - Northern Pacific Railroad Company
- Alsorozat009 - Engineering Records
- 008 - Physical plant drawing
- 001 - Bridges
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- IratdarabBB019657 - Northern Pacific Engineering Drawing: Shop Plan - Bill Bolts, Bridge 14 (22) - County Road, West of Algoma, Idaho, undated
- IratdarabBB019658 - Northern Pacific Engineering Drawing: Bearing Block Rising Brace, Bridge 14 (22) - County Road, West of Algoma, Idaho, undated
- IratdarabBB019659 - Northern Pacific Engineering Drawing: Plan of Abutment, Bridge 96, Cunningham, Washington, 1900
- IratdarabBB019661 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 96, Cunningham, Washington, 1957
- IratdarabBB019662 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 96, Cunningham, Washington, 1941
- IratdarabBB019663 - Northern Pacific Engineering Drawing: Plan of Abutment, Bridge 97, Cunningham, Washington, 1900
- IratdarabBB019665 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 97, Cunningham, Washington, 1957
- IratdarabBB019666 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 97, Cunningham, Washington, 1942
- IratdarabBB019667 - Northern Pacific Engineering Drawing: Standard Plan Beam Girder, Bridge 97, Cunningham, Washington, undated
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