Columbia subject headings:
German Americans--History--Congresses.
Germany--Foreign relations--United States--Congresses.
United States--Foreign relations--Germany--Congresses.
Harvard subject headings:
German Americans--History--Congresses.
Germany--Foreign relations--United States--Congresses.
United States--Foreign relations--Germany--Congresses.
Princeton subject headings:
German Americans--History--Congresses.
Germany--Foreign relations--United States--Congresses.
United States--Foreign relations--Germany--Congresses.