found: nuc87-104728: His William Frey papers [MI] 1985(hdg. on WU rept.: Frey, William, 1839-1888)
found: NUCMC data from Columbia Univ. Libraries, Bakhmeteff Archive (New York, N.Y.) for Khmelʹnit︠s︡kai︠a︡, E.S. Papers, ca. 1928-1956(Frey, William, 1839-1888; Russian immigrant in Kansas in the 1870s)
found: LC manual authority card(hdg.: Frey, William, 1839-1888: adopted name of Vladimir Konstantinovich Geins; came to the U.S. in 1868, left in 1885 for London, where he died)
notfound: Azbuchnyĭ ukazatelʹ imen russ. di︠e︡i︠a︡teleĭ, 1887-88
