May 19 MD, Glen Burnie. Monsignor Slade School Sports Card Show, School Gymnasium. 120 Dorsey Rd., SH: 9am-3pm, T: 74-6’, F: $35. for 12’, A: free. Leo Zerhusen, 329 Double Eagle Dr., Linthicum, MD 21090. PH: 410-859-1297 or 766-7130.