Thanks to Morgan for pointing this one out - Bonhams has a handwritten, signed postcard from 1938 (the auction entry originally said 1926 but has been corrected) up for auction. It is quite densely written and is a nice sampling of his handwriting.
Lot 150
Autograph postcard signed ("JRR Tolkien"), to Miss [Katherine or Kitty] Kilbride, [...]

A nice video from people who clearly love books.

Hauff and Auvermann is having an auction on June 2nd, 2012 which includes a special illustrated edition of The Lord of the Rings produced by Klett-Cotta in 2003.
http://www.buchauktionen-berlin.de/ergebnis.php?verfasser=tolkien&Submit=Abschicken
Description: Tolkien, John Ronald Reuel The Lord of the Rings. Translated from English by Wolfgang Krege. Special Edition. 3 vols (in 1 volume). With full-color book decorations, frontispieces [...]

There is no excerpt because this is a protected post.

Many of you have seen Elwë around the forums here, most recently posting about his new bookstore www.telperionbooks.com. Starting a bookselling business involves a lot of work in building up stock, but more importantly accumulating knowledge about the books and collectors that will be your market. Elwë has done an excellent job getting [...]

Bonhams Sale 18992
22 Nov 2011
New Bond Street, London
Books, Maps, Manuscripts and Historical Photographs, including the Property of the late Michael Silverman
Lot 182 - TOLKIEN (J.R.R.)Autograph notes and heavily revised typescript with accompanying autograph letter about a review of Robinson's edition of Chaucer: being his suggested revisions and corrections to the review by his friend and [...]

Beyond Bree is pleased to present its 2012 Calendar featuring art focused on the Elves of Tolkien's Middle-earth. The calendar features classic art from Beyond Bree's past as well as new works by a host of artists from around the globe, including:
* Paula DiSante* Sylvia Hunnewell* Tim Kirk* Octo Kwan* [...]

I was pleased to discover that Hobbitus Ille: The Latin Hobbit is scheduled for publication in September of 2012 by HarperCollins. So far there is incredibly little information available on the book beyond the title, except that the author is Mark Walker (author of Latin for Everyday Life and other books on Latin) and [...]

RR Auction currently has a nice signed letter in their auction 378, item number 655. Thanks to Trotter for pointing it out!
http://rrauction.com/bidtracker_detail.cfm?IN=655http://rrauction.com/past_auction_item.cfm?ID=3247595
It is currently bid up to $2716 as of November 8th.Sold Price: $4,339.20
TLS, one page, 8 x 10, February 17, 1963. Letter to Miss Julie Cape. In full, "Thank you very much for [...]

J. R. R. TOLKIEN - THE BOOKS, THE FILMS, THE WHOLE CULTURAL PHENOMENON
A new critical study of J.R.R. Tolkien, author of The Lord of the Rings, The Hobbit and other books.
This new analysis by Jeremy Mark Robinson explores Tolkien's major writings (The Lord of the Rings, The Hobbit, Beowulf: The Monster and the Critics, The [...]