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
- 440 more...
- ItemBB014686 - Northern Pacific Engineering Drawing: Plan/Detail Abutments, Bridge 143 (186), West of Lombard, Montana, 1904
- ItemBB014687 - Northern Pacific Engineering Drawing: Deck Plan, Bridge 143 (186), West of Lombard, Montana, 1960
- ItemBB014688 - Northern Pacific Engineering Drawing: Detail of 16 Foot Beam Span, Bridge 143 (186), West of Lombard, Montana, undated
- ItemBB014689 - Northern Pacific Engineering Drawing: Plan/Detail Abutment, Bridge 143 (186), West of Lombard, Montana, undated
- ItemBB014690 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 143 (186), West of Lombard, Montana, 1958
- ItemBB014691 - Northern Pacific Engineering Drawing: Shop Plan - Shoe/Roller, Bridge 6 - Chehalis River, Milburn, Washington, undated
- ItemBB014692 - Northern Pacific Engineering Drawing: Shop Plan - Post/Chord, Bridge 6 - Chehalis River, Milburn, Washington, undated
- ItemBB014693 - Northern Pacific Engineering Drawing: Shop Plan - Chord/Post, Bridge 6 - Chehalis River, Milburn, Washington, undated
- ItemBB014694 - Northern Pacific Engineering Drawing: Shop Plan - Post/Diagonal, Bridge 6 - Chehalis River, Milburn, Washington, undated
- 7279 more...