Spokane, Portland and Seattle Railway Engineering Drawing: Plan and Elevation, Tunnel - Nehalem Boom Crossing - Map, United Junction, Oregon, Line Segment 442, Milepost 10.19. Sheet 23282, undated.
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Scope note(s)
A Pacific Northwest Railroad Archive subject. An engineering drawing of a structure designed to allow passage of trains underground.
Source note(s)
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Hierarchical terms
Railroad tunnel drawings
Railroad tunnel drawings
Equivalent terms
Railroad tunnel drawings
UF Railroad tunnels
UF Tunnels