Follow us on our Facebook page for information on upcoming postcard shows!     November 18-19, 2016. York, PA. York International Postcard Expo. York Fairgrounds, Horticultural Hall, 334 Carlisle Ave., York. Fri: 9 AM-7 PM. Sat: 9 AM-5 PM. More than 70 dealers from around the world. $5.00, good for both days. Mary L. Martin, Ltd., 230-232 North […]