Lancaster County Postcard Club will host the 28th annual Lancaster Postcard Expo on Saturday, Aug. 20, from 9 a.m. to 5 p.m. at the Farm and Home Center, 1383 Arcadia Road, Lancaster. Postcard dealers from six states will offer a wide variety of postcards for sale. Food will also be available for purchase.

There is a nominal admission fee. For more information, call 717-413-6882 or 717-873-0746.