As previously posted about, in early December Sotheby's will auction off a very valuable and very interesting collection of rare books, including a first edition of Audubon's The Birds of America, which is considered to be the "world's most expensive book".  Prior to the auction, the collection will tour and be put on public display in Paris, New York and London.   Included in the public viewing will be the letters written by Queen Elizabeth I to jailer Sir Ralph Sadler about the imprisonment of Mary Queen of Scots, Shakspeare's First Folio, and an illustrated copy of Plutarch's Lives of Romulus. The schedule for the public viewing tour: *October 7-11: Sotheby's Paris, Galerie Charpentier, 76 rue du Faubourg Saint Honoré *October 30-November 5: Sotheby's New York, 1334 York Avenue at 72nd Street *December 3-5: Sotheby's London, 34-35 New Bond Street, W1A 2AA World's most expensive book on display