LEWISTON – Upcoming events at Callahan Hall, Marsden Hartley Cultural Center, Lewiston Public Library include: July 21, fox trot & polka mini-lessons at 7 p.m. followed by open ballroom dancing from 7:45 p.m., to 10:30 p.m. Admission: $3. July 27, “Polka-Plus” Party featuring the King Pirogi Polka Band playing classic polka tunes as well as fox trots, waltzes, swing and Latin numbers at 7:30 p.m. to 9:30 p.m., Admission: $2. FMI on both events call: 784-0135, ext. 200. Both events featured on Monday’s B1 of the City edition incorrectly reported the same date.