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Go to Pacific Northwest Railroad Archive at Burien, Washington
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  •  CollectionD0027 - Timothy Miller Collection
  •  Series007 - Spokane, Portland, and Seattle Railway
  •  Subseries Level 1009 - Engineering Records
  •  Subseries Level 2008 - Physical plant drawing
  •  Subseries Level 3008 - Tunnels
  • ItemBB022942 - Spokane, Portland and Seattle Railway Engineering Drawing: Foundation Data, Tunnel - Nehalem Boom Crossing, United Junction, Oregon, undated
  • ItemBB022943 - Spokane, Portland and Seattle Railway Engineering Drawing: Frame Details, Tunnel - Nehalem Boom Crossing, United Junction, Oregon, undated
  • ItemBB022944 - Spokane, Portland and Seattle Railway Engineering Drawing: Frame Details, Tunnel - Nehalem Boom Crossing, United Junction, Oregon, undated
  • ItemBB022945 - Spokane, Portland and Seattle Railway Engineering Drawing: Wall Details, Tunnel - Nehalem Boom Crossing, United Junction, Oregon, undated
  • ItemBB022946 - Spokane, Portland and Seattle Railway Engineering Drawing: Standard Expansion Joint Detail, Tunnel - Nehalem Boom Crossing, United Junction, Oregon, undated
  • 3 more...

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Spokane, Portland and Seattle Railway Engineering Drawing: Foundation Data, Tunnel - Nehalem Boom Crossing, United Junction, Oregon, undated

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