Columbia subject headings:
Harvard subject headings:
Gregorovius, Ferdinand, 1821-1891--Diaries.
Gregorovius, Ferdinand, 1821-1891--Homes and haunts--Italy--Rome.
Historians--Germany--Diaries.
Rome (Italy)--Description and travel.
Rome (Italy)--Politics and government.
Princeton subject headings:
Gregorovius, Ferdinand, 1821-1891--Travel--Italy.
Italy--History--1849-1870.