¹ Similar lists have been printed in the Review as follows: V, 456 (1911); VI, 464 (1912); VII, 689 (1913); VIII, 488 (1914); XIV, 155 (1920); XVI, 497 (1922); XIX, 171 (1925); XX, 660 (1926); XXI, 645 (1927); XXII, 736 (1928); XXIII, 795 (1929); XXIV, 799 (1930); XXV, 798 (1931); XXVI, 769 (1932); XXVII, 680 (1933); XXVIII, 766 (1934); XXIX, 713 (1935); XXX, 811 (1936); XXXI, 772 (1937); XXXII, 796 (1938); XXXIII, 732 (1939); XXXIV, 767 (1940); XXXV, 752 (1941); XXXVI, 734 (1942); XXXVII, 706 (1943); XXXVIII, 766 (1944); XXXIX, 779 (1945); XL, 775 (1946); XLI, 754 (1947); XLII, 759 (1948); XLIII, 787 (1949).

Items which appeared in the August, 1949, list are in general classified under the same headings in the present list, and new items have been assimilated to the 1949 classification as far as possible. In cases where classification of an item has been suggested by the institution concerned, the suggestion has been followed. Each item is listed under one classification only.

The lists printed in the Review are based on information from departments giving graduate instruction in political science. Often dissertations are in progress in departments of economics, history, sociology, etc., which overlap or supplement dissertations in preparation in political science. Attention is called especially to the following lists: “Check List of Current Researches in Public Administration Reported to the Committee on Public Administration, Social Science Research Council” (mimeographed, most recent edition, January, 1943); “Doctoral Dissertations in Political Economy in Progress in American Colleges and Universities,” in the American Economic Review; “List of Doctoral Dissertations in History Now in Progress,” formerly published by the Division of Historical Research, Carnegie Institution of Washington, but since the 1938 issue as a supplement to the American Historical Review; and “Higher Degrees in Sociology,” in the American Journal of Sociology. Usually one list is published each year. These are in addition to the “List of American Doctoral Dissertations Printed in 1938,” the most recent of an annual series published by the Library of Congress; and Edward A. Henry's “Doctoral Dissertations Accepted by American Universities, 1948–1949,” the sixteenth of a series beginning in 1933-34, compiled for the Association of Research Libraries. Consult, for other lists, T. R. Palfrey and H. E. Coleman, Jr. “Guide to Bibliographies of Theses, United States and Canada” (Chicago, American Library Association, 2nd ed., 1940).