May 31-July 14. Reception: Friday, May 31, 6:30-9 p.m. Featuring artists and artisans participating in the Summer Arts Festival on the Essex Town Green on June 15-16. Spectrum showcases local, regional and national artists and artisans, both emerging and established. In addition to presenting painting, sculpture and photography, the Gallery includes a Store, which offers fine crafts in diverse mediums such as fabric, glass, ceramics, paper, pottery, jewelry and more.