And here's the schedule until fall, when more are added:

May:

Mercersburg Home & Garden Festival - May 9th
Virginia Arts & Wine Festival - May 16th

June:

Middletown Fair June 13 & 14
Westminster, MD Arts in the Park June 6th

July:

Waynesboro, PA July 4th Jubilee July 4th
Carlisle, PA Summerfest July 11th

August:

Off for now

September:

Mount Holly Springs Holly Days September 19th
Mercersburg Townfest September 26th

October:

Thurmont Colorfest October 10 & 11th (Pending acceptance)
Dillsburg Farmers Fair October 17th