The ideal scope of any study pretending to offer a quantitative picture would be complete coverage of its chosen field, but realistic considerations limit such an undertaking. Oriental literature, for example, though cited by a number of scientific writers on variance, is too unavailable in translation to receive more than passing mention. The same is true of certain areas in western European belles-lettres, for only such as have appeared in English, French and German, or have been adequately reviewed in these languages, are of avail to the present writer. Even within such limits, of course, completeness is a goal as elusive as the rainbow’s end. First there is the difficulty of learning about pertinent items. Scientific material on sex variance has been recorded adequately in bibliographies, indexes and abstracts in the fields of psychology and medicine. Imaginative writing has not been similarly covered. Almost the only systematic listing was that attempted early in this century in a journal of varying title and frequency published in Berlin and edited by Magnus Hirschfeld: _Jahrbuch für sexuelle Zwischenstufen_ (etc.), sponsored by the Wissenschaftlich-humanitäres Komitee, 1899-1921. There, under the heading “Bibliographie der homosexuellen Belletristik,” European titles were assembled for the years 1899-1917, with a scattering of retrospective items; however, even for current German material the list was not exhaustive. As to the nonscientific bibliographies and indexes, the material listed under such sexual headings as appear in them is largely factual or controversial, not imaginative writing. Book reviews sometimes offer helpful leads, but variant works are all too often ignored altogether, or are treated with such squeamishness or caution as to obscure their sexual significance. And, though extensive discussions or notes of pertinent material occasionally appear in factual works, beginning roughly with Krafft-Ebing’s _Psychopathia Sexualis_ (1886) and coming down to Donald Corey’s _The Homosexual in America_ (1952), such windfalls are sporadic and disconnected. In short, however thoroughly a student may comb bibliographic sources, he will still happen by pure chance upon enough items not mentioned there to end with the certainty of others still undiscovered. He can only hope, then, that better informed readers will hasten to attack his shortcomings and fill his lacunae.