Bruce Bohrer discusses his new book, “Best Seat in the House: Diary of a Wrigley Field Usher,” his nine seasons as an usher at Wrigley Field, the patrons, cheers of the crowd and their beloved Cubs. A book signing follows the discussion; books are available for $15.95, cash or credit. Register at www.itpld.org or call 847-459-4100 x253