American diplomacy, 1900-1950 / George F. Kennan Kennan, George F. (George Frost), 1904-2005. E744 .K3 327.73 KEA London : Secker & Warburg, 1952. 1952. 1952 Text 146 p. ; eng Chicago. University. Charles R. Walgreen Foundation. Lectures. [from old catalog] United States Foreign relations 20th century. United States Foreign relations Russia. Russia Foreign relations United States.