Columbia subject headings:
Bethlehem Steel Corporation--History.
Iron and steel workers--Labor unions--Pennsylvania--Bethlehem--History.
Iron and steel workers--Pennsylvania--Bethlehem--History.
Steel industry and trade--United States--History.
Harvard subject headings:
Bethlehem Steel Corporation--History.
Iron and steel workers--Labor unions--Pennsylvania--Bethlehem--History.
Iron and steel workers--Pennsylvania--Bethlehem--History.
Steel industry and trade--United States--History
Princeton subject headings:
Bethlehem Steel Corporation--History.
Iron and steel workers--Labor unions--Pennsylvania--Bethlehem--History.
Iron and steel workers--Pennsylvania--Bethlehem--History.
Steel industry and trade--United States--History.