Cardboard Promotions Big Sports Card & Memorabilia Show, Saturday, May 11, 10 am-9 pm, Solomon Pond Mall, Marlboro. Buy-sell-trade with over 50 vendors, free admission, card grading. Autograph Guests: Hockey Hall of Famer Marcel Dionne, former Bruin Steve Kasper and Andrew Raycroft, 5 time NFL Pro Bowler Irving Fryar and Red Sox legend Rico Petrocelli