Here’s an odd but fun site: Edgar Governo, Historian of Things That Never Were
This page is a resource for lovers of fiction in many forms: books, movies, tv, comics and games. It links off to histories and timelines of the stories we’ve loved. For instance if you’re on a Lord of the Ring buzz you might be delighted to find a link to A History and Complete Chronology of Númenor. Star Trek fans will no doubt prefer Fandom Star Trek Chronology. All told there’re over 250 links to fiction histories on this page. Dig in!