SUNBURY– A Ferris wheel, food, music, edutainment, Edison’s dynamo and more, are some of the Sunbury Semiquincentennial celebration features Tuesday through Thursday. Slade Shreck, co-chair of the event says, after the 4th, activities begin Tuesday, with vendors, music at Riverfront Stage beginning at 5pm, entertainment at Woodring Amphitheater and the Gazebo, living-history exhibits, Masonic Building exhibits, and Edison’s Dynamo.