Birdfan70, you should be able to get the "card fix" you are craving at the Chantilly (VA) Show, which is held 3 times each year - the next show is March 31st through April 2nd. This is by far the best and largest show in the DC area.
http://csashows.com/?page_id=12778
Nick Schoff/Schoff Promotions has long put on several much smaller shows each year in NoVa - usually at Annandale and Tysons Corner.
http://shoffpromotions.com/