by Vatsyayana
by Havelock Ellis
by Havelock Ellis
by John Harvey Kellogg
by Sigmund Freud
by Mary Ware Dennett
by C. G. (Carl Gustav) Jung
by Otto Weininger
by William J. (William Josephus) Robinson
by Havelock Ellis
by Havelock Ellis
by Vatsyayana
by Havelock Ellis
by Sigmund Freud
by Havelock Ellis
by Thomas W. (Thomas Washington) Shannon
by D. H. (David Herbert) Lawrence
by Havelock Ellis
by Emil Lucka
by Otto Weininger
by Claude Anet
by Alexander J. (Alexander James) McIvor-Tyndall
by Edward Carpenter
by Bernard Simon Talmey
by Anthony M. (Anthony Mario) Ludovici
by A. Maude (Agnes Maude) Royden
by William Isaac Thomas
by active 1875-1876 James Ashton
by N. M. (Nettie Maria) Stevens
by Edward Carpenter
by Havelock Ellis
by Edward Carpenter
by N. M. (Nettie Maria) Stevens
by André Tridon
by Eliza Burt Gamble
by C. Gasquoine (Catherine Gasquoine) Hartley