Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1012 - Cartographic materials
- Subseries Level 2002 - Plats
- ItemPlat009894 - Plat Map of Northern Pacific Facilities at Lacey, Washington, 1967
- ItemPlat009895 - Plat Map of Northern Pacific Facilities at Aberdeen Junction, Washington, 1913
- ItemPlat009897 - Plat Map of Northern Pacific Facilities at Buell, Montana, 1914
- ItemPlat009898 - Plat Map of Northern Pacific Facilities at Buell, Montana, undated
- ItemPlat009899 - Plat Map of Northern Pacific Facilities at Buena, Washington, 1924
- ItemPlat009900 - Plat Map of Northern Pacific Facilities at Dayton, Washington, undated
- ItemPlat009901 - Plat Map of Northern Pacific Facilities at Dayton, Washington, undated
- ItemPlat009907 - Plat Map of Northern Pacific Facilities at Dixie, Washington, 1960
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