Columbia subject headings:
Harvard subject headings:
Iron and steel workers--Pennsylvania--Monessen--Interviews.
Monessen (Pa.)--History--Sources.
Steel industry and trade--Pennsylvania--Monessen--History--Sources.
Princeton subject headings:
Iron and steel workers--Pennsylvania--Monessen--Interviews.
Monessen (Pa.)--History--Sources.
Steel industry and trade--Pennsylvania--Monessen--History--Sources.