I have decided to publish only the names of selected books which seem to me to be the best for teachers, parents, and young people. In making the selection, I have considered several hundred books which bear on the sex problems in an educational way, and have decided to reject the majority of them. While there might be some value in a long list with critical notes on books that I cannot recommend, it would be a worse than thankless task to compile such an annotated bibliography; for the compiler would surely add to his collection of enemies many authors whose books deserve severe criticism. The sudden and sensational publicity concerning matters of sex and the possibility of commercial exploitation has produced an avalanche of sex books, some good, many bad, and the majority ordinary. Evidently, most of the authors, including numerous physicians, have written to order and without special preparation. The books of the following lists are not all deserving of unqualified recommendation. In fact, some of them are included because they are the least objectionable of their much-needed kind, and others because they have some good grains that the reader will find worth picking from a mass of non-nutritious but, fortunately, non-poisonous chaff. I have not included many books which I recognize as important for readers thoroughly trained in science, but which are dangerous for the average reader of literature on sex. It is possible that I may have overlooked some very good books that I have not intended to ignore; and I shall be glad to have my attention called to books which deserve recognition. Special bibliographies have been published in Wile's "Sex-Education," March's "Towards Racial Health," Geddes and Thomson's "Sex," and Foster's "Social Emergency." Publishers.--In most cases the first part of the names of well-known publishers has been given. Unless otherwise mentioned, they have offices in New York City. In addition, the following abbreviations have been used: A.M.A. = American Medical Association, Chicago. A.S.H.A. = American Social Hygiene Association, 105 West 40th St., New York City. S.S.M.P. = Society of Sanitary and Moral Prophylaxis, 105 West 40th Street, New York City. Association Press = press of the National Board of the Y.M.C.A., New York City. FOR EDUCATORS AND PARENTS ADDAMS, JANE. "A New Conscience and an Ancient Evil." Macmillan. $1.00. (Contains all the average reader needs to know concerning prostitution.) BOK, EDWARD, Editor. "Books of Self-Knowledge for Young People and Parents." Revell. $.25 each. BIGELOW, M.A. "Relation of Biology to Sex-Instruction in Schools and Colleges." Journal of Social Diseases, II, 4, October, 1911. CABOT, RICHARD C. "The Christian Approach to Social Morality." National Y.W.C.A., New York. $.50. CABOT, RICHARD C. "What Men Live By." Houghton Mifflin. $1.50. (A book that has helped many people.)