Encyclopedia Sherlockiana: An A-To-Z Guide to the World of the Great Detective

Not to be confused with another book with the same title by Orlando Park, this volume was originally published under the title "Encyclopedia Sherlockiana", but for some reason was re-titled (maybe different titles in the US and UK?) "The Sherlock Holmes Encyclopedia". Interestingly, Orlando Park's book was originally published under the title "Sherlock Holmes, Esq., and John H. Watson, M.D., An Encyclopedia of Their Affairs"! 326 pages packed with information about the canon (synopses of plots, full descriptions of characters, places, biographies) as well as the history of Sherlock Holmes in television, films, plays and radio, as well as pastiches and Sherlock Holmes societies throughout the world.

This is a really cool book. It's got everything anyone would want to know about Sherlock Holmes. The book has a chronological listing of many dates important to Sherlockians. It has the Canon listed and almost anything else readers would want.