Aunt Jane and Simon Tolkien's Hobbit. Starts at 4:55. I don't know where the expert got the idea that Tolkien corrected 1500 dust-jackets himself to remove the extra e in Dodgeson. The book was bought in by Tracy Steinberg, Simon Tolkien's wife.

The book and letter were sold at Sotheby's English Literature, History, Fine Bindings, Private Press Books, Children's Books, Illustrated Books and Drawings on the 10th July 2003

469 (pp.294-5) - This lot consists of a First Edition copy of The Hobbit inscribed to Tolkien's aunt Jane Neave, together with a one page letter dated 22 September 1937. The lot description includes a few short quotes from the letter and the opening is reproduced in a photograph. It sold for £48,000.

The letter is also referenced on page 215 of the Chronology, J.R.R. Tolkien Companion & Guide by Scull and Hammond, 2nd edition.