East End Arts presents a series of summer events, including the Mosaic Festival, a private viewing of the Fischer Art Glass Collection, and a Summer Soiree. The Mosaic Festival, Long Island’s largest public art festival, takes place on May 28th at 12 pm. On July 15th, a private viewing and reception of the Fischer Art Glass Collection will be held at 4 pm, with limited space available. Finally, the Summer Soiree, Riverhead’s liveliest cocktail party, will be held on July 21st at 6 pm.