Economista e giornalista statunitense (n. Kiev 1883 - m. 1970). Corrispondente dall'URSS per il Chicago Daily News (1921-22), fondatore della National economic and social planning association (1934), esperto al Consiglio economico e sociale (1946-49). Tra le sue opere: Labor movement in France (1912), Labor and internationalism (1929), Problems of economic planning (1931), National social and economic planning (1934), Industrial planning under the codes (1935), The problem of technological unemployment (1941), Economic consequences of 2nd World War (1941), International economic development (1942), Time for planning (1945).