Columbia subject headings:
Harvard subject headings:
Alexander II, Emperor of Russia, 1818-1881.
I︠U︡rʹevskai︠a︡, Ekaterina Mikhaĭlovna (Dolgorukova) Kni︠a︡gini︠a︡, 1847-1923.
Princeton subject headings:
Alexander II, Emperor of Russia, 1818-1881.
I︠U︡rʹevskai︠a︡, Ekaterina Mikhaĭlovna Dolgorukova, kni︠a︡gini︠a︡, 1847-1923.