Northern Pacific Engineering Drawing: Abutments/Piers, Bridge 51 (50), west of Spire Rock, Montana, Line Segment 326, Milepost 51.5. Sheet 293 - 1, undated.
Elements area
Taxonomy
Code
Scope note(s)
Source note(s)
Taken From: "List of Officers, Agents, Stations, Etc. Number 44" published by the NP Accounting Department.