The Warwick Children's Book Festival invites all the young at heart in the Hudson Valley for a day celebrating the love of the written word. Sixty prominent authors and illustrators of children's and young adult books will gather on Railroad Avenue in Warwick to autograph and sell their books, which will be available for purchase on-site, and meet and talk with children and families. The Uncle Brothers will perform a free children's concert on Railroad Green at 1:00.