Columbia subject headings:
American literature--20th century--History and criticism--Congresses.
German literature--20th century--History and criticism--Congresses.
Germany--Relations--United States--Congresses.
United States--Relations--Germany--Congresses.
Harvard subject headings:
German American literature--20th century--History and criticism.
German literature (English)--20th century--History and criticism.
Germany (West)--Relations--United States.
Scientific literature--Germany (West)
Scientific literature--United States--History--20th century.
United States--Relations--Germany (West)
Princeton subject headings:
American literature--20th century--History and criticism--Congresses.
German literature--20th century--History and criticism--Congresses.
Germany--Relations--United States--Congresses.
United States--Relations--Germany--Congresses.