Columbia subject headings:
I︠U︡supov, F. F. (Feliks Feliksovich), kni︠a︡zʹ, 1887-1967.
Rasputin, Grigoriĭ Efimovich, 1869-1916--Death and burial.
Russia--Court and courtiers--Biography.
Harvard subject headings:
I͡Usupov, F. F. (Feliks Feliksovich), kni͡azʹ, 1887-1967.
Rasputin, Grigoriĭ Efimovich, 1869-1916--Death and burial.
Russia--Court and courtiers--Biography.
Princeton subject headings:
I︠U︡supov, F. F. (Feliks Feliksovich), kni︠a︡zʹ, 1887-1967.
Rasputin, Grigoriĭ Efimovich, 1869-1916--Assassination.
Russia--History--Nicholas II, 1894-1917.