The Voynich manuscript is a mysterious illustrated book written in an indecipherable text. It is thought to have been written between approximately 1450 and 1520 by an unknown author in an unidentified script and language.Over its recorded existence, the Voynich manuscript has been the object of intense study by many professional and amateur cryptographers, including some top American and British codebreakers of World War II fame (all of whom failed to decrypt a single word). This string of failures has turned the Voynich manuscript into a famous subject of historical cryptology, but it has also given weight to the theory that the book is simply an elaborate hoax — a meaningless sequence of arbitrary symbols. The book is named after the Polish-American book-dealer Wilfrid M. Voynich, who acquired it in 1912. As of 2005, the Voynich manuscript is item MS 408 in the Beinecke Rare Book and Manuscript Library of Yale University. The first facsimile edition was published in 2005.