At Pacific Northwest Railroad Archive, geographic drawings including maps, plats (cadastral maps) and track elevation (grade) profiles.
LC Subject Authority Heading: Cartographic materials: http://id.loc.gov/authorities/subjects/sh00003498
The Timothy Chisum Collection consists of 2 Northern Pacific station plats of Tacoma, Washington.
Chisum, Timothy P.Great Northern Blueprint Number 1325-1-2, Track Profile, Inland Empire Proposed Spur to Rosalia Gravel Pit, undated. Other subject categories: Profile
Great Northern Blueprint Number 1325-1-3, Track Profile, Inland Empire, Rosilia Gravel Pit Spur, undated. Other subject categories: Profile
Great Northern Blueprint Number 1237-8-1, Track Profile, Fern Bluff, Washington, Profile of Cribwork at Fern Bluff along Skykomish River, Sheet Number 2, 1892. Other subject categories: Profile
Great Northern Blueprint Number 1237-8-2, Track Profile, Fern Bluff, Washington, Profile of Cribwork at Fern Bluff along Skykomish River, Sheet Number 1, 1892. Other subject categories: Profile
Great Northern Blueprint Number 1220-2-2, Track Profile, Connection Betwee Great Northern and Spokane, Portland and Seattle Railway at Spokane, undated. Other subject categories: Profile
Great Northern Blueprint Number 1174-3, Track Profile, Cross Sections of Havermale Island, undated. Other subject categories: Profile
Great Northern Blueprint Number 1249-21-1, Track Profile, County Road Crossing, Spokane, 1910. Other subject categories: Profile
Great Northern Blueprint Number 1238-2-4, Track Profile, Profile of Great Northern and Spokane, Portland and Seattle Railway Connection (New Streets), 1910. Other subject categories: Profile
Great Northern Blueprint Number 1220-2-6, Track Profile, Revised Profile at Melbourne and 13th Avenues, 1910. Other subject categories: Profile