Columbia subject headings:
Harvard subject headings:
Franz Ferdinand, Archduke of Austria, 1863-1914--Family.
Princesses--Austria--Biography
Sophie, Archduchess of Austria, 1868-1914
Princeton subject headings:
Franz Ferdinand, Archduke of Austria, 1863-1914--Family.
Princesses--Austria--Biography.
Sophie, Archduchess of Austria, 1866-1914.