Columbia subject headings:
Harvard subject headings:
Debs, Eugene V. (Eugene Victor), 1855-1926--Archives.
Socialists--United States--Biography
Princeton subject headings:
Debs, Eugene V. (Eugene Victor), 1855-1926--Archives.
Socialism--United States--History--Sources.
Socialists--United States--Biography.
United States--Politics and government--1865-1933--Sources.