Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1012 - Cartographic materials
- Subseries Level 2002 - Plats
- 747 more...
- ItemPlat011553 - Plat Map of Northern Pacific Facilities at Olympia, Washington, 1954
- ItemPlat011554 - Plat Map of Northern Pacific Facilities at Olympia, Washington, 1918
- ItemPlat011555 - Plat Map of Northern Pacific Facilities at Olympia, Washington, 1918
- ItemPlat011570 - Plat Map of Northern Pacific Facilities at Orillia, Washington, undated
- ItemPlat011571 - Plat Map of Northern Pacific Facilities at Orillia, Washington, undated
- ItemPlat011572 - Plat Map of Northern Pacific Facilities at Orillia, Washington, undated
- ItemPlat011573 - Plat Map of Northern Pacific Facilities at Orillia, Washington, 1967
- ItemPlat011574 - Plat Map of Northern Pacific Facilities at Orillia, Washington, undated
- ItemPlat011575 - Plat Map of Northern Pacific Facilities at Orillia, Washington, undated
- 1079 more...