Columbia subject headings:
Harvard subject headings:
Brüning, Heinrich, 1885-1970--Correspondence.
Catholic Church
Cornelissen, A. J. M. (Antonius J. M.), 1902-1977--Correspondence.
Ex-prime ministers--Germany--Correspondence.
Exiles--Germany--Correspondence.
Exiles--Netherlands--Correspondence.
Germany--Foreign relations--Netherlands.
Germany--History--1918-1933--Sources.
Germany--History--1933-1945--Sources.
Germany--History--1945-1955--Sources.
Germany--Politics and government--20th century
Germany--Politics and government--20th century--Sources.
Hitler, Adolf, 1889-1945
Mommersteeg, Piet, 1897-1966--Correspondence.
Netherlands--Foreign relations--Germany--20th century.
Pius XII, Pope, 1876-1958.
Poels, Henricus Andreas, 1868-1948--Correspondence.
Prime ministers--Germany--Correspondence.
Theologians--Netherlands--Correspondence.
Theologians--United States--Correspondence.
Princeton subject headings:
Brüning, Heinrich, 1885-1970--Correspondence.
Cornelissen, A. J. M. (Antonius J. M.), 1902-1977.
Hitler, Adolf, 1889-1945.
Mommersteeg, Piet, 1897-1966--Correspondence.
Pius XII, Pope, 1876-1958.
Poels, Henricus Andreas, 1868-1948--Correspondence.