No Copyright - United States
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No known restrictions on use.
Notes:
Title supplied by cataloger.
Print in album volume MDWSC, Contract 17, Wachusett-Coldbrook Tunnel, Tunnel West and Shaft 8, Volume 1, Chief Engineer set
Typed on back: West heading at Shaft 5 showing horizontal bars in position for drilling lower holes in bench at Sta. 431+/-.
Notes (acquisition):
Massachusetts Metropolitan District Commission; Massachusetts Department of Conservation and Recreation