Book excerpt: Beginning in 1869, when the study of homosexuality can be said to have begun with the establishment of sexology, this Encyclopedia offers accounts of the most important international developments in an area that now occupies a critical place in many fields of academic endeavours. While gays and lesbians have shared many aspects of life, their histories and cultures developed in profoundly different ways. To reflect this crucial fact, the Encyclopedia has been prepared in two separate volumes assuring that both histories receive full, unbiased attention and that a broad range of human experience is covered. Written by some of the most famous names in the field, as well as new researchers this is intended as a reference for students and scholars in all areas of study, as well as the general public.