Sociology

G. K. (Gilbert Keith) Chesterton
John Stuart Mill
Sigmund Freud, A. A. (Abraham Arden) Brill
Alexander J. (Alexander James) McIvor-Tyndall
Margaret Fuller, Arthur B. (Arthur Buckminster) Fuller, Horace Greeley
Emma Goldman
Petr Alekseevich Kropotkin
Hugo Münsterberg
William F. (William Frederick) Bigelow
Paul Popenoe, Roswell Hill Johnson