Columbia subject headings:
Eulenburg-Hertefeld, Philipp, Fürst zu, 1847-1921.
Germany--Politics and government--1866-1871--Sources.
Germany--Politics and government--1871-1918--Sources.
Statesmen--Germany--Biography.
Harvard subject headings:
Eulenburg-Hertefeld, Philipp, Fürst zu, 1847-1921.
Germany--Politics and government--1866-1871--Sources.
Germany--Politics and government--1871-1918--Sources.
Statesmen--Germany--Biography.
Statesmen--Germany--Correspondence.
Princeton subject headings:
Eulenburg-Hertefeld, Philip, Fürst zu, 1847-1921.
Germany--Politics and government--1866-1871--Sources.
Germany--Politics and government--1871-1918--Sources.
Statesmen--Germany--Correspondence, reminiscences, etc.