TO DO TODAY
Books and More Sale — 9 a.m.-8 p.m., Bill Library, 718 Colonel Ledyard Highway, Ledyard; also 9 a.m.-5 p.m. at Gales Ferry Library, 18 Hurlbutt Road; hosted by the Friends of the Ledyard Libraries; through Feb. 29; (860) 464-9912. Dancing with Parkinson’s — 10:30 a.m., Crozier Williams Student Center, Connecticut College, 270 Mohegan Ave., New London; gentle and creative dance; free; (401) 2617062.
Senior Book Discussion — 10:30 a.m., Ledyard Senior Center, 12 Van Tassell Drive, Gales Ferry; “Eleanor Oliphant is Completely Fine” by Gail Honeyman; hosted by Gales Ferry Library; free; (860) 464-6943.
Drop-in Knitting — 1-3 p.m., Stonington Free Library, 20 High St.; free; (860) 535-0658.
Chess Club — 4-7 p.m., Public Library of New London, 63 Huntington St.; free; (860) 447-1411.
Coral Reef Aquarium Fisheries —6 p.m., La Grua Center, 32 Water St., Stonington; presentation by Mystic Aquarium research scientist Paul Anderson; part of the On Our Minds series; $5; (860) 535-2300.
Greg Gilmartin — 6 p.m., Bank Square Books, 53 West Main St., Mystic; book talk and signing with the author of “Spy Island”; free; (860) 536-3795. Environmental Issues Lecture Series — 6 p.m., Three Rivers Community College, 574 New London Turnpike, Norwich; presentation by Judy Preston of Connecticut Sea Grant on coastal water quality; free; (860) 215-9443. The Phoenix of Mystic — 7:30 p.m., Mystic Congregational Church Hall, 43 East Main St., Mystic; presentation on the Central Hall Block by Lou Allyn; hosted by the Mystic River Historical Society; free for members, $5 nonmembers.
Thames Stamp Club — 7:30 p.m., Clark Lane Middle School, 105 Clark Lane, Waterford; free.
Sing and Stomp — 10 a.m., Groton Public Library, 52 Newtown Road; music and dance program for all ages with an adult; free; (860) 4416750.
Stories and Crafts — 2:15 p.m., East Lyme Public Library, 39 Society Road; for ages 3-5 with an adult; free; (860) 739-6926.
Teen Gaming Club — 4 p.m., Groton Public Library, 52 Newtown Road; board and video games for grades 6-12; free; (860) 441-6750.
Evening Storytime — 6:30 p.m., East Lyme Public Library, 39 Society Road; for all ages with an adult; free; (860) 739-6926.