Book TalkUniversity of Florida historian Jack E. Davis (The Gulf: The Making of an American Sea) will discuss and sign his Pulitzer Prize-winning book at 1 p.m. May 27 at the Oxford Exchange, 420 W Kennedy Blvd., Tampa. Admission $5, applicable toward book purchase; tickets at oxfordexchange.com/pages/calendar.Events are free unless otherwise noted. To place an item in Book Talk, send authorís name, book title, appearance time, date, venue name and address, admission cost (if any) and a contact phone number to [email protected] (with "Book Talk" in subject line) or Colette Bancroft, Tampa Bay Times, P.O. Box 1121, St. Petersburg, FL 33731. Deadline is 14 days before publication.