Columbia subject headings:
Harvard subject headings:
Italy--Description and travel--19th century.
Medicine--History--19th century--Sources.
Nobility--Russia--Travel--Italy--History.
Olʹdenburgskīĭ, Petr Georgīevich, print͡s, 1812-1881--Travel--Italy.
Physicians--Germany--Diaries.
Physicians--Travel--Italy--History.
Therese, Herzogin von Oldenburg, 1815-1871--Travel--Italy.
Willett, Fritz, 1807-1857--Travel--Diaries.
Willett, Fritz, 1807-1857--Travel--Italy.
Princeton subject headings:
Italy--Description and travel.