Cardboard Promotions Boston-Dedham Sports Card Show, Sunday, August 23, 8:30 to 2, Holiday Inn, Dedham. 84 Vendor Tables, Free Hourly Door Prizes, Buy-Sell-Trade Old & New Sports Cards & Memorabilia, $3 admission, under 16 free. Autograph Guests: Hockey Hall of Famers Phil Esposito & Ray Bourque. Exit 29A off Rt. 95 to the Holiday Inn