Steampunk. When did it start? What books can I read that fit the genre? Are there steampunk games out there?
Have questions about the history of Steampunk? Check out Steampunkopedia!
Under the Chronology section alone, there are 3000 titles of movies, books, films, comic books, games, and plays that have contributed to and created the phenomenon we now know as Steampunk. You can even compare SP with its' cousin, Dieselpunk.
The site itself is in Polish, but if you do not wish to translate the site, a downloadable English PDF of Steampunkopedia is available.