USAF SAXOPHONE QUARTET -- 8 p.m. Thursday. Part of the Chamber Players Series, this concert by the USAF Saxophone Quartet features William Murr, Jeremy Koch, Jacob McCray and Mary Beth George. Harmony Hall Regional Center, John Addison Concert Hall, 10701 Livingston Rd., Fort Washington. Free. 301-203-6070.
AN AFTERNOON OF GAY NINETIES SONGS -- 4 p.m. Sunday. Vocalist Henry Wixon and accompanist Helen Smith perform. Light refreshments. Marietta House Museum, 5626 Bell Station Rd., Glenn Dale. $5. Reservations, 301-464-5291.
CASHORE MARIONETTES -- 10:30 a.m. and 12:15 p.m. Friday; 11 a.m. Saturday. Joseph Cashore manipulates lifelike marionettes in a show set to music for children in grades pre-K to 5. Publick Playhouse, 5445 Landover Rd., Cheverly. $5. 301-277-1710.
FAMILY CAMPFIRE -- 7:30-9 p.m. Friday. Children 2 and older can cozy up to a fire and listen to nature tales; marshmallows provided for roasting. Clearwater Nature Center, 11000 Thrift Rd., Clinton. $3. Reservations, 301-297-4575.
NATURE CRAFTS -- 10-11 a.m. Saturday. Nature crafts, a story and live animals, for ages 3-8. Watkins Nature Center, 301 Watkins Park Dr., Upper Marlboro. $2. Reservations, 301-218-6702.
GYMNASTICS WORKSHOP -- 1:30-2:30 p.m. Saturday. Basic gymnastics instruction for ages 14 and younger. Prince George's Sports & Learning Complex, 8001 Sheriff Rd., Landover. Free. 301-583-2400.
BON APPETOTS -- 2-4 p.m. Saturday. Ages 2-6 and their parents cook treats and make a craft. Lake Arbor Community Center, 10100 Lake Arbor Way, Mitchellville. $6. 301-333-6561.
NATURE CLUB FOR KIDS -- 2:30-3:30 p.m. Saturday. Ages 6-12 learn about nature and ecology in this monthly program featuring games, crafts, stories and other nature-themed activities. The club meets the first Saturday of each month. Bladensburg Waterfront Park, 4601 Annapolis Rd., Bladensburg. $2. 301-779-0371.
ESTHER CHRISTIAN -- 2 p.m. and 5 p.m. Saturday. The author of "Chance Meeting" will discuss her novel at Karibu Books. At 2 p.m. at Prince George's Plaza, 3500 East/West Hwy., Hyattsville; at 5 p.m. at Bowie Town Center Mall, 15624 Emerald Way, Bowie. Free. 301-559-1140.
"The Trojan Women" -- 7:30 p.m. Thursday; 8 p.m. Friday; 2 p.m. and 8 p.m. Saturday; 7:30 p.m. Tuesday and Wednesday. The University of Maryland Theater Department presents a retelling of Euripides's work. Written in a contemporary voice by actress and playwright Ellen McLaughlin, the tale of the aftermath of the Trojan War explores the women of Troy, who encounter the loss of love, motherhood, freedom and the land upon which they nurtured their lives and dreams. Clarice Smith Performing Arts Center, University Boulevard and Stadium Drive, College Park. $20. 301-405-2787.
DROP-IN WATER AEROBICS -- 7:30-8:30 p.m. Tuesdays and Thursdays. Pool workout for ages 18 and older. Glenarden/Theresa Banks Complex, 8615-A McLain Ave., Glenarden. $6. 301-772-5515.
ANACOSTIA RIVER BOAT TOUR -- 12-12:45 p.m. Tuesdays, Thursdays and Saturdays. A park naturalist leads a pontoon ride to search for birds and other wildlife. Bladensburg Waterfront Park, 4601 Annapolis Rd., Bladensburg. Free. 301-779-0371.
BIRD AND NATURE WALK: FRAN UHLER NATURAL AREA -- 7:30-10:30 a.m. Saturday. Members of the Prince George's Audubon Society lead a leisurely walk in search of resident and migrant birds; for ages 6 and older. Patuxent River Park, 16000 Croom Airport Rd., Upper Marlboro. Free. Reservations, 301-627-6074.
CHESAPEAKE BAY CRITICAL-AREA DRIVING TOUR -- 10 a.m.-3 p.m. Sundays. Self-guided, four-mile driving tour includes interpretive stops, an observation tower and a timber bridge over scenic wetlands. Patuxent River Park, 16000 Croom Airport Rd., Upper Marlboro. Free. 301-627-6074.
"OPTICAL COLORFEAST" -- Through Nov. 21. Painting by Lisa Green and T.H. Gomillion. Landover Dental Associates, Largo Town Center, 932 Largo Center Dr., Largo. Free. 301-322-8900.
"SUSAN HOWLAND, PAINTING" -- Through Nov. 30. Paintings by Montpelier resident artist and instructor Susan Howland. Montpelier Cultural Arts Center, 12826 Laurel-Bowie Rd., Laurel. Free. 301-953-1993.
"GETTING OUT THE VOTE: THE POLITICAL SCENE IN THE 1800s" -- Through Nov. 30. Political memorabilia of the era. Surratt House Museum, 9118 Brandywine Rd., Clinton. $3; seniors, $2; ages 5-18, $1. 301-868-1121.
"HORACE CAPRON AT 200: A FOUNDER'S LIFE" -- Through Dec. 31. Photographs, autobiography excerpts and other artifacts chronicle the life and times of Laurel's founder. The Laurel Museum, 817 Main St., Laurel. Free. 301-725-7975.
"A LIFE IN PICTURES: WHAT I DO AND HOW I DO IT" -- Through Jan. 1. Vincent Verga, picture editor for the Library of Congress, presents works in two- and three-dimensional media. Harmony Hall Regional Center/John Addison Concert Hall, 10701 Livingston Rd., Fort Washington. Free. 301-203-6070.
"SSS . . . WHEN THE IRON WAS HOT: AFRICAN AMERICAN IRONWORKERS IN LAUREL/MUIRKIRK 1730-1930" -- Through March 31. A celebration of the contribution of black ironworkers in Laurel. Montpelier Mansion, Route 197 and Muirkirk Road, Laurel. $3; seniors, $2, ages 5-18, $1. 301-953-1376.
"PLEASE BE SEATED" -- Ongoing. Nineteenth-century chairs, sofas, stools and benches from the museum's permanent collection. Riversdale House Museum, 4811 Riverdale Rd., Riverdale. $3; seniors, $2; children, $1. 301-864-0420.
"LIVING THE HEALTHY LIFE: SPORTS, HEALTH AND FITNESS IN THE NEW DEAL ERA" -- Ongoing. An examination of the evolution of health and fitness awareness during the 1930s and '40s. Greenbelt Museum, 15 Crescent Rd., Greenbelt. Free. 301-507-6582.
RADIO PREMIUMS -- Ongoing. Memorabilia related to radio serials of the 1930s, '40s and '50s, including "Radio Orphan Annie," "Buck Rogers in the 25th Century" and "Captain Midnight." Radio-Television Museum, 2608 Mitchellville Rd., Bowie. Free. 301-390-1020.
"THE FORGOTTEN WAR REMEMBERED: AMERICA AND THE KOREAN WAR" -- Ongoing. Includes 20 photographs documenting the war, from growing tension during the late 1940s through signing of the armistice in 1953. National Archives at College Park, 8601 Adelphi Rd. Free. 301-713-6800.
VARIETY DANCE -- 8-11 p.m. Friday. Laurel Friendship Club's monthly variety dance featuring modern, oldies, big band, ballroom, Latin, swing and country music. Phelps Center, Eighth and Montgomery streets, Laurel. $2.99. 301-937-2896.
POTOMAC VALLEY DRESSAGE ASSOCIATION HORSE SHOW -- 8 a.m. Sunday. Dressage horse show in the outdoor rings. Prince George's Equestrian Center, 14900 Pennsylvania Ave., Upper Marlboro. Free. 301-952-7999.
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