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Go to Pacific Northwest Railroad Archive at Burien, Washington
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  •  CollectionD0027 - Timothy Miller Collection
  •  Series004 - Northern Pacific Railroad Company
  •  Subseries Level 1009 - Engineering Records
  •  Subseries Level 2008 - Physical plant drawing
  •  Subseries Level 3008 - Tunnels
  • 122 more...
  • ItemBB025517 - Northern Pacific Engineering Drawing: Shop Plan - Self - Oiler, Mullan Tunnel, Blossburg, Montana, undated
  • ItemBB025518 - Northern Pacific Engineering Drawing: Shop Plan - Wedge Bolt, Mullan Tunnel, Blossburg, Montana, undated
  • ItemBB025519 - Northern Pacific Engineering Drawing: Piping Plans, Mullan Tunnel, Blossburg, Montana, undated
  • ItemBB025520 - Northern Pacific Engineering Drawing: Proposed Change Pipe, Mullan Tunnel, Blossburg, Montana, undated
  • ItemBB025521 - Northern Pacific Engineering Drawing: Ventilation Motor Rooms, Mullan Tunnel, Blossburg, Montana, undated
  • ItemBB025522 - Northern Pacific Engineering Drawing: Proposed Rib Sections, Nimrod Tunnel, West of Nimrod, Montana, undated
  • ItemBB025523 - Northern Pacific Engineering Drawing: Shop Plan - Steel Ribs, Nimrod Tunnel, West of Nimrod, Montana, undated

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Northern Pacific Engineering Drawing: Ventilation Motor Rooms, Mullan Tunnel, Blossburg, Montana, undated

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