Has anyone ever written any books concerning what happened in Middle Earth that was not in any of the 4 books?

Question

For example, there are many books about Star Wars and wat went on between the 6 movies and even after. I was wondering if any such books were written about Middle Earth.

Answer 1

The Star Wars series, not just Lucas's part, has been prostituted out, so to speak. There have been some very good books that span the years between the movies, after the movies and before the movies. And also some very bad books.
Tolkien's children have not allowed others to write about the characters of Middle Earth or Middle Earth itself. Therefore, the only books other than the 4 original or those written from his notes by his children.

Answer 2

Yes, there there are books concerning the history of Middle Earth. Called "The History of Middle Earth" and written by Tolkien's son, Christopher, these books combine all the notes and stories J. R. R. Tolkien left into volumes of information.

Also, there is a new book coming out called "The Children of Hurin." It is available for pre-order on amazon.com
http://www.amazon.com/gp/product/0618894640/ref=wl_it_dp/002-5651246-3013608?ie=UTF8&coliid=IHBUPV4JL4K71&colid=3VJWN2UDICI3W

Answer 3

Christopher Tolkien edited at least ten volumes of his father's work. These showed how Middle Earth developed ad include many more bits of information about ME. I do not believe that anyone else could write about ME and keep it consistent and believable within the mythos that JRRT created.

Answer 4

I don't think there are official books about it, but of course there's TONS of fan-fics out there, and some of them may be pretty good.

With Star Wars, George Lucas welcomed (aka shamelessly hogged) as much publicity as he could get. Tolkein was a little more protective of his stories and the world he created.