Columbia subject headings:
Humboldt County (Calif.)--Economic conditions.
Humboldt County (Calif.)--Politics and government.
Humboldt County (Calif.)--Social conditions.
Lumbermen--California--Humboldt County--History.
Lumbermen--Labor unions--California--Humboldt County--History.
Harvard subject headings:
Humboldt County (Calif.)--Economic conditions.
Humboldt County (Calif.)--Politics and government.
Humboldt County (Calif.)--Social conditions.
Lumbermen--California--Humboldt County--History.
Lumbermen--Labor unions--California--Humboldt County--History.
Princeton subject headings:
Humboldt County (Calif.)--Economic conditions.
Humboldt County (Calif.)--Politics and government.
Humboldt County (Calif.)--Social conditions.
Lumbermen--California--Humboldt County--History.
Lumbermen--Labor unions--California--Humboldt County--History.