472:Which

Crossword puzzles first appeared in the New York World in 1913, and soon became a popular feature in newspapers. In 1924, ||| X |||'s aunt, a crossword puzzle devotee, asked ||| X ||| whether there was a book of these puzzles that she could give to a friend. ||| X ||| discovered that none had been published, and, with ||| Y |||, launched a company to exploit the opportunity.Their first book was marketed cleverly. To attract attention, it came with a pencil attached .The ad proved prophetic, and crossword puzzles were indeed the craze of 1924. ||| X ||| & ||| Y ||| continues to be the preeminent U.S. publisher of crossword puzzle books.||| X ||| & ||| Y ||| soon became a publisher of books of all kinds, and currently publishes over two thousand titles annually under 35 different imprints.In 1939, with Robert Fair de Graff, ||| X ||| & ||| Y ||| founded Pocket Books, America's first paperback publisher.Recent bestsellers published by the company include the work of Jesse Duplantis, Stephen King, Mary Higgins Clark, Bob Woodward, David McCullough, Jimmy Carter, Bob Dylan, Holly Black, Richard Rhodes, Michael Moore, and Hillary Clinton.||| X ||| & ||| Y ||| owns the Threshold Editions imprint, which specializes in publishing politically right-of-center books, including Jerome R. Corsi's controversial The Obama Nation.

Ans:Simon & Schuster