Columbia subject headings:
Archives--Germany.
Germans--United States--History--Sources.
Germany--Foreign relations--United States.
United States--Foreign relations--Germany.
United States--History--Sources.
Harvard subject headings:
Archives--Germany
Germans--United States--History--Sources.
Germany--Foreign relations--United States.
United States--Foreign relations--Germany.
United States--History--Sources.
Princeton subject headings:
Archives--Germany.
Germans--United States--History--Sources.
Germany--Foreign relations--United States.
United States--Foreign relations--Germany.
United States--History--Sources.