Houdini's original revised typescript for his final book, A Magician Among the Spirits, is going on the auction block February 18, 2013 as part of PBA Galleries online auction of Rare Books & Manuscripts. The estimate is $70,000 to $100,000 (!). Here is the full auction description:
Sale Number 500. Lot 109.
Original typescript, 408 leaves on quarto sheets, numbered 1-398 + 11 pages numbered 299b-299k . 28.5x21.5 cm (11x8½"). In period ring binder, covered in green
Click here to view the auction page and bid at PBA Galleries.
Thanks to Greg Jung of PBA Galleries for permission to use this photo.
UPDATE: No sale for Spirits typescript.