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
- 4048 more...
- ItemBB018679 - Northern Pacific Engineering Drawing: Pier/Abutment Plate 7, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- ItemBB018681 - Northern Pacific Engineering Drawing: Deck Plan, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- ItemBB018682 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, 1957
- ItemBB018683 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, 1928
- ItemBB018684 - Northern Pacific Engineering Drawing: Shop Plan - Beam Span, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- ItemBB018685 - Northern Pacific Engineering Drawing: Shop Plan - 7 Spans, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- ItemBB018686 - Northern Pacific Engineering Drawing: Remodeling Bridge/General Plan, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- ItemBB018687 - Northern Pacific Engineering Drawing: Detail of Proposed Abutment, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- ItemBB018688 - Northern Pacific Engineering Drawing: Falsework Details, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- 3671 more...