Here is more information about the event from their site:
Located at lovely Shupp’s Grove in Adamstown, PA (Lancaster County), CBN will take place every first Sunday, beginning May through October 2009. A local treasure, Shupp’s Grove is an outdoor vintage and antique market. It’s pastoral setting will provide a shaded haven to showcase up-and-coming indie designers, crafters, artists, and makers.
Crafty By Nature is still looking for vendors, so head to the site if you're local. The first day will be May 3. I better get busy!