Columbia subject headings:
Historic sites--Pennsylvania--Westmoreland County--Guidebooks.
Industrial archaeology--Pennsylvania--Westmoreland County.
Harvard subject headings:
Historic sites--Pennsylvania--Westmoreland County--Guidebooks.
Industrial archaeology--Pennsylvania--Westmoreland County.
Princeton subject headings:
Historic sites--Pennsylvania--Westmoreland County--Guidebooks.
Industrial archaeology--Pennsylvania--Westmoreland County.