Columbia subject headings:
Lynch, Gerald, 1908-
Petroleum industry and trade--United States--History--Sources.
Petroleum workers--United States--Biography.
Harvard subject headings:
Lynch, Gerald, 1908-
Petroleum industry and trade--United States--History--Sources.
Petroleum workers--United States--Biography.
Princeton subject headings:
Lynch, Gerald, 1908-
Petroleum industry and trade--United States--History--Sources.
Petroleum workers--United States--Biography.