Columbia subject headings:
Harvard subject headings:
Mexico--History--European intervention, 1861-1867--Personal narratives, Austrian.
Mexico--Social conditions.
Pitner, Ernst, 1838-1895 or 1896--Correspondence.
Pitner, Ernst, 1838-1895 or 1896--Diaries.
Princeton subject headings:
Mexico--History--European intervention, 1861-1867--Personal narratives, Austrian.
Mexico--Social conditions.
Pitner, Ernst, 1838---Correspondence.
Pitner, Ernst, 1838---Diaries.