Northern Pacific Engineering Drawing: Ventilation Motor Rooms, Mullan Tunnel, Blossburg, Montana, Line Segment 042, Milepost 19.6. Sheet 282 - 46, undated.
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Scope note(s)
At Pacific Northwest Railroad Archive, engineering drawings providing the form and dimensions of railroad structures such as bridges, tunnels and depots.
Source note(s)
LC Subject Authority Heading: Engineering Drawing https://lccn.loc.gov/sh85043213
Display note(s)
Hierarchical terms
Engineering drawing
Equivalent terms
Engineering drawing
UF Physical plant drawing
UF Technical drawings