ALL MEDIA EXHIBITION -- 11 a.m.-4 p.m. Fridays-Sundays through Sept. 5. Local and visiting artists display their work. Mattawoman Creek Art Center, Smallwood State Park, Route 224, Marbury. Free. 301-743-5159 or www.mattawomanart.org.
Lectures And Literature
BOOK DISCUSSIONS -- Join area book groups to discuss recent readings. Free. Various locations.
2 p.m. next Thursday. Discuss "Balzac and the Little Chinese Seamstress," a humorous look inside a Dominican Republic family, by Sijie Dai, Southern library, 20 Appeal Lane, Lusby. 410-326-5289.
7 p.m. next Thursday. Discuss "Tender Is the Night" by F. Scott Fitzgerald. Discussion facilitated by Robin Bates, St. Mary's College of Maryland English professor. Leonardtown Library, 23250 Hollywood Rd., Leonardtown. 301-475-2846.
BOOK FAIR -- 9 a.m.-5 p.m. tomorrow. All books 50 percent off. J.C. Parks Elementary School, 3505 Livingston Rd., Bryans Road. 301-375-7444.
FOREST ECOLOGY -- 2 p.m. Sunday. Neil Pederson discusses tree-ring analysis, climate change studies, the influence of temperature on tree growth and the oldest oaks in the eastern United States. Presented by the Calvert County Natural Resources Division. Battle Creek Cypress Swamp, 2880 Grays Rd., Prince Frederick. Free. 410-535-5327.
CRITICS' CORNER -- 2 p.m. Monday. Young adults discuss favorite and new books and play games at Charles County library branches. Free. Registration not required.
La Plata library, 2 Garrett Ave., La Plata. 301-934-9001.
P.D. Brown library, 50 Village St., Waldorf. 301-645-2864.
Potomac library, 3225 Ruth B. Swann Dr., Indian Head. 301-375-7375.
ADULT SUMMER READING -- Beach Book Bingo ends Tuesday. Turn in cards at a Calvert Library branch for chance to win $50 gift certificate. 410-535-0291.
SUMMER STORY TIME -- Calvert Library branches offer family story time at all branches. Free.
10 a.m. and 1 p.m. Tuesdays. Prince Frederick library, 30 Duke St., Prince Frederick. 410-535-0291 or 301-855-1862.
10 and 11 a.m. Tuesdays, Southern library, 20 Appeal Lane, Lusby. 410-326-5289.