Letters from: Everard Feilding; Mrs. L.E. Piper; Prof. William James; Arthur Avalon; Dr. Sigmund Freud; Prof. Th. Flournoy; M. Ce'sar deVesme; Dr. Gustave Geley; Eusapia Palladino; Nikola Tesla; Alexander Graham Bell; Dr. James H. Hyslop; Andrew Jackson Davis; Dr. J.M. Peebles; Edward T. Bennett; Katherine Bates; Sir Oliver Lodge; John Hays Hammond, Jr.; Prof. Hans Driesch; Dr. Joseph Maxwell; Dr. Morton Prince; Sir William Crookes; Rev. C. Drayton Thomas; Canadian S.P.R.; Stewart Edward White; John C. Curran; Prof. G. Stanley Hall; Mrs. Henry Sidgwick; Prof. Joseph Jastrow; W.H. Salter; Mrs. Salter; W.T. Stead;W. Whately Carington; Count Petrovo-Solovovo; Prof. Robert W. Wood; J. Cecil Maby; Prof. G.T.W. Patrick; W.W. Baggally; Hewat McKenzie; Dr. Carl Wickland; Prof. William McDougall; Count von Klinckowstroem; Prescott F. Hall; Horace Leaf; California S.P.R.; Somerset Maugham; Don Marquis; Richard LeGallienne; Mary Roberts Rinehart; Sinclair Lewis; Rex Beach; Sylvan Muldoon; Harrison D. Barrett; Harry Houdini; Howard Thurston; Dr. A.M. Wilson; Ottokar Fischer; Harry Kellar…etc.