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 3007 - Track
- 83 more...
- ItemBB018218 - Northern Pacific Engineering Drawing: Detail of Retaining Wall, Wall for Grade Separation Spokane, Spokane, Washington, undated
- ItemBB018219 - Northern Pacific Engineering Drawing: Detail of Retaining Wall, Wall for Grade Separation Spokane, Spokane, Washington, undated
- ItemBB018220 - Northern Pacific Engineering Drawing: Elevation South Retaining Wall, Wall for Grade Separation Spokane, Spokane, Washington, undated
- ItemBB018221 - Northern Pacific Engineering Drawing: Elevation South Retaining Wall, Wall for Grade Separation Spokane, Spokane, Washington, undated
- ItemBB018222 - Northern Pacific Engineering Drawing: Elevation South Retaining Wall, Wall for Grade Separation Spokane, Spokane, Washington, undated
- ItemBB018223 - Northern Pacific Engineering Drawing: Retaining Wall/South Side Track, Wall for Grade Separation Spokane, Spokane, Washington, undated
- ItemBB018224 - Northern Pacific Engineering Drawing: Industry Track Wall, Wall for Grade Separation Spokane, Spokane, Washington, undated
- ItemBB018225 - Northern Pacific Engineering Drawing: North/South Wall, Wall for Grade Separation Spokane, Spokane, Washington, undated
- ItemBB018226 - Northern Pacific Engineering Drawing: Elevation North Retaining Walls, Wall for Grade Separation Spokane, Spokane, Washington, undated
- 236 more...