A recent article on Open Culture reminded me about the exhibit called Tolkien: Maker of Middle-earth. It is the latest deep delve into J.R.R. Tolkien's archives for previously unpublished and, to the wider world, unseen materials including early drafts and original drawings.
The exhibit spent late last year at The Weston Library but now a great many items from it will be moving from Oxford to New York's Morgan Library & Museum before then traveling to France. It opens here in the states in less than two weeks so make your plans to see it if you can and let me know how it goes!