Columbia subject headings:
Germans--Mexico--History--20th century.
Germany--Emigration and immigration--History--1933-1945.
Mexico--Emigration and immigration--History--20th century.
Political refugees--Mexico--History--20th century.
Harvard subject headings:
Germans--Mexico--History--20th century.
Germany--Emigration and immigration--History--1933-1945.
Mexico--Emigration and immigration--History--20th century.
Political refugees--Mexico--History--20th century
Princeton subject headings:
Communists--Germany--History.
Germans--Mexico--History--20th century.
Germany--Emigration and immigration.
Intellectuals--Germany--History.
Intellectuals--Germany--Political activity.
Mexico--Emigration and immigration.
Mexico--Politics and government--1910-1946.