5:00-6:00pm. T.A.C.O.S. (Teen Advisory Council of Students) meeting for teens, Calvert Library needs your help planning events and making sure your library has everything you need. Help make Calvert Library awesome! Free food (and service learning hours) at every meeting! Calvert Library Prince Frederick, 850 Costley Way, 410-535-0291 or 301-855-1862. calvertlibrary.info.