Observer Editor, Free
Event Derby Horse Show: Cobblestone Farms at Revel Run.
Horses and riders compete in dressage, stadium jumping, and cross-country riding at the new Revel Run facility, former location of the Reddeman Farms Golf Course. Refreshments. Pets must be on leash. 9 a.m.-3 p.m., Revel Run, 555 S. Dancer Rd., Chelsea. Free. 395-2633.
