Bates College will mark the 50^thanniversary of the establishment of its Dance Program by the late Marcy Plavin with an informal performance by dance alumni and current students on Saturday, April 27 at 4 p.m. at Schaeffer Theatre, located at 329 College Street in Lewiston. Free and open to the public, the event is offered in lieu of a formal evening performance that was announced earlier in the year. For more information, call 786-6161.