
by Lewis Henry Morgan

by Thorstein Veblen

by E. W. (Ernest Watson) Burgess, Robert Ezra Park

by R. R. (Robert Ranulph) Marett

by Charles Horton Cooley

by Émile Durkheim

by Daniel G. (Daniel Garrison) Brinton

by Henry K. (Henry Kalloch) Rowe

by Frank W. (Frank Wilson) Blackmar

by John Dewey

by J. Howard (John Howard) Moore

by Charles A. (Charles Abram) Ellwood

by Ossip Lourié

by Georg Simmel

by William Withington

by John Berry Haycraft

by Ralph Adams Cram

by Georges Palante

by Arthur M. (Arthur Morrow) Lewis