Railroad Archives Online
- ArquivoD0027 - Timothy Miller Collection
- Série004 - Northern Pacific Railroad Company
- Subsérie009 - Engineering Records
- 008 - Physical plant drawing
- 007 - Track
- 321 mais...
- ItemBB037201 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Scale, Longview, Washington, undated
- ItemBB037202 - Northern Pacific Engineering Drawing: Shop Plan - Load Cell, Scale, Longview, Washington, undated
- ItemBB037203 - Northern Pacific Engineering Drawing: Shop Plan - Track Switch, Scale, Longview, Washington, undated
- ItemBB037204 - Northern Pacific Engineering Drawing: Shop Plan - External Wiring Diagram, Scale, Longview, Washington, undated
- ItemBB037205 - Northern Pacific Engineering Drawing: Shop Plan - Track Scale, Scale, Longview, Washington, undated
- ItemBB037206 - Northern Pacific Engineering Drawing: Shop Plan - Track Scale, Scale, Longview, Washington, undated
- ItemBB037207 - Northern Pacific Engineering Drawing: Shop Plan - Weighing in Motion, Scale, Longview, Washington, undated