Curtis, Bruce, 1950- William Graham Sumner / by Bruce Curtis - Boston : Twayne Publishers, 1981 - 186 p. : port. ; 22 cm. - Twayne's United States authors series ; TUSAS 391 . Bibliography : p. 178 - 182 ISBN: 080577324X : USD 14.50 Subjects--Personal Names: Sumner, William Graham, 1840-1910 Subjects--Topical Terms: Sociology--History--United States Dewey Class. No.: 301.0973