Some letters and signed books are available for sale through Alexander Autographs this month.

Signed Hobbit:
http://auctions.alexautographs.com/as ... +++++1110+&refno=+++64307

Letter:
http://auctions.alexautographs.com/as ... +++++1111+&refno=+++64236

Signed book:
http://auctions.alexautographs.com/as ... +++++1159+&refno=+++64306

Tolkien signature:
http://auctions.alexautographs.com/as ... +++++1160+&refno=+++64308