found: NUCMC data from American Jewish Archives for His Papers, 1916-1975(Isadore Keyfitz; educator)
found: LC man. auth. cd.(hdg.: Keyfitz, Isadore)
found: WW Am. Jewry, 1938-39(Keyfitz, Isadore, prof.; b. Poltava, Russia, Apr. 17, 1897; s. Zalman and Perl (Klimovitzky) K.; went to Canada, 1914; U.S., 1919; U. of Mo. since 1929; m. Sara Feder, 1921; address: Columbia, Mo.)
found: SSDI, June 17, 2011(Name: Isadore Keyfitz; Last Residence: 977 (U.S. Consulate) Jerusalem, Israel; Born: 17 Feb. 1895; Died: July 1976; State (Year) SSN issued: Missouri (1951))
