Columbia subject headings:
Harvard subject headings:
Jews--Germany--Karlsruhe--Correspondence.
Karlsruhe (Germany)--Ethnic relations.
Kislau (Concentration camp)
Marum, Ludwig, 1882-1934.
Political prisoners--Germany (West)--Karlsruhe--Correspondence.
Political prisoners--Germany--Karlsruhe--Correspondence.
Princeton subject headings:
Jews--Germany (West)--Karlsruhe--Correspondence.
Karlsruhe (Germany)--Ethnic relations.
Marum, Ludwig, 1882-1934.
Political prisoners--Germany (West)--Karlsruhe--Correspondence.