Columbia subject headings:
Harvard subject headings:
Communists--Germany--Biography
Communists--Germany--Correspondence.
Marx, Jenny, 1814-1881--Correspondence.
Marx, Jenny, 1814-1881.
Marx, Karl, 1818-1883--Family.
Women communists--Germany--Biography.
Women communists--Germany--Correspondence.
Women socialists--Germany--Biography.
Women socialists--Germany--Correspondence.
Princeton subject headings:
Communists--Germany--Biography.
Communists--Germany--Correspondence.
Marx, Jenny, 1814-1881--Correspondence.
Marx, Jenny, 1814-1881.
Marx, Karl, 1818-1883--Family.