U.S. AIR FORCE BAND -- 8 p.m. today. Performance is part of the Chamber Players Series. The John Addison Concert Hall at Harmony Hall Regional Center, 10701 Livingston Rd., Fort Washington. Free. 301-203-6070.
MONTPELIER JAZZ SERIES: CARL GRUBBS QUARTET -- 8 p.m. tomorrow. The Baltimore saxophonist, pianist and composer performs new jazz compositions for all ages. Montpelier Cultural Arts Center, 12826 Laurel-Bowie Rd., Laurel. $20. 301-953-1993.
THE HARDWAY CONNECTION -- 8 p.m. Saturday. The soul-blues band performs. The John Addison Concert Hall at Harmony Hall Regional Center, 10701 Livingston Rd., Fort Washington. $15; students and seniors, $12. 301-203-6070.
PETER PAN CLUB -- 10:30 a.m.-noon today. Aviation stories, crafts, games and museum exploration for ages 3-5. College Park Aviation Museum, 1985 Cpl. Frank Scott Dr., College Park. Free with museum admission: adults, $4; seniors, $3; ages 18 and younger, $2. 301-864-6029.
BAT AND BEAVER WALK -- 7-8:30 p.m. Saturday. Naturalist-led stroll to look for bats, beavers, owls and flying squirrels. For ages 6 and older. Clearwater Nature Center, 11000 Thrift Rd., Clinton. $2. 301-297-4575.
HARVEST FEST -- 1-3 p.m. Saturday. Activities include arts and crafts and carnival games for children 11 and younger. Hillcrest Heights Community Center, 2300 Oxon Run Dr., Hillcrest Heights. Free. 301-505-0896.
CAMPFIRE AND STORYTELLING -- 7 p.m. Saturday. Storytelling, scavenger hunt and refreshments for all ages. Marietta House Museum, 5626 Bell Station Rd., Glenn Dale. $2. 301-464-5291.
SUITLAND HARVEST FEST -- 7-9 p.m. Saturday. Carnival games, music, refreshments and a moon bounce, for ages 5-12. Suitland Community Center, 5600 Regency Lane, Forestville. $6. 301-736-3518.
ELEANOR LIGGENS -- 5 p.m. Saturday. The author of "Esther: The Peasant Girl Who Saved a Nation" discusses her book. Karibu Books, Iverson Mall, 3817 Branch Ave., Hillcrest Heights. Free. 301-899-3730.
ONE-ACT PLAY FESTIVAL -- 8 p.m. Friday and Saturday; 2 p.m. Sunday. Short, original comedies and dramas written by local playwrights. Laurel Mill Playhouse, 508 Main St., Laurel. Adults, $12.50; students and seniors, $10. 301-617-9906.
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.
FALL COLORS HIKE -- 10-11 a.m. Saturday. A naturalist-led tour of autumn-colored trees along woodland trails, for ages 4 and older. Clearwater Nature Center, 11000 Thrift Rd., Clinton. $2. 301-297-4575.
FALL COLORS HIKE -- 1-2 p.m. Saturday. Naturalist-led hike to identify trees. Watkins Nature Center, 301 Watkins Park Dr., Upper Marlboro. $2. Reservations, 301-218-6702.
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.
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.
"DIALOGUE: ART.TECHNOLOGY.IMAGERY" -- Ends today. Digital photography and multimedia works by various artists. Montpelier Cultural Arts Center, 12826 Laurel-Bowie Rd., Laurel. Free. 301-953-1993.
"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.
"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.
"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.
GREENBELT HALLOWEEN -- 3:45-5:15 p.m. tomorrow. Parade and costume contest, sponsored by the Greenbelt Department of Recreation. For ages 11/2 to 12. Greenbelt Youth Center, 99 Centerway. Free. 301-397-2202.
HALLOWEEN COSTUME PARTY -- 6-8 p.m. today. Ages 5-12 spend an evening with friendly ghosts and goblins. There will be tricks and treats, and prizes will be awarded for the most creative costumes. Cedar Heights Community Center, 1200 Glen Willow Dr., Seat Pleasant. $3. 301-773-8881.
HALLOWEEN HAUNTED HOUSE -- 6:30-9:30 p.m. today through Saturday. A haunted house for all ages. Glassmanor Community Center, 1101 Marcy Ave., Oxon Hill. $4. 301-567-6033.
HAUNTED HOUSE -- 7-10 p.m. today through Saturday. Haunted house with treats for ages 6 and older. Those younger than 16 must be accompanied by an adult. Allentown Fitness and Splash Park, 7210 Allentown Rd., Fort Washington. $5. Reservations, 301-449-5567.
TRICKS AND TREATS PARTY -- 3-6 p.m. tomorrow. Party with a variety of games, including a pie-eating contest, musical chairs and a costume competition for ages 5-12. Langley Park Community Center, 1500 Merrimac Dr., Hyattsville. $2. Reservations, 301-445-4508.
LITTLE GHOST AND GOBLINS HALLOWEEN PARTY -- 6-7:30 p.m. tomorrow. Children 10 and younger wear scary costumes and gather around a campfire to hear stories, sing songs and watch a puppet show. Mount Rainier Nature and Recreation Center, 4701 31st Place, Mount Rainier. Reservations, 301-927-2163.
CHILDREN'S HALLOWEEN PARTY -- 6-8 p.m. tomorrow. Children ages 5-9 play games, listen to music and compete in a Halloween costume contest. Upper Marlboro Community Center, 5400 Marlboro Race Track Rd., Upper Marlboro. Free. Reservations, 301-627-2828.
HALLOWEEN HOWLS -- 7-9 p.m. tomorrow. Costume and limbo contests followed by a magic act. Bladensburg Community Center, 4500 57th Ave., Bladensburg. Free. 301-277-2124.
XTREME TEENS: HALLOWEEN PARTY -- 7-10 p.m. tomorrow. Dance party for ages 13-17. Costumes not required. William Beanes Community Center, 5108 Dianna Dr., Suitland. Free. 301-568-7719.
FALL HARVEST FESTIVAL -- 11 a.m.-2 p.m. Saturday. Carnival games, face painting, pumpkin roll races, sack races and crafts. For ages 2-12. Prince George's Sports & Learning Complex, 8001 Sheriff Rd., Landover. Children younger than 18, $4; adults 18 and older, free. Reservations, 301-583-2582.
COLLEGE PARK DOG FESTIVAL -- 9 a.m.-3 p.m. Saturday. For dogs and their owners, sponsored by the 2 Kids & A Dog shop. Includes a costume contest, free hot dogs, drinks, chips, cake and dog cake, games, a doghouse-building workshop, dog service providers and merchandise. Proceeds from a raffle for a 2004 Ford Explorer will benefit the College Park Dog Park Association and the Prince George's County SPCA/Humane Society. College Park Dog Park, 4300 Metzerott Rd. Free. 240-416-3135 or www.doggieshoppe.com.
HALLOWEEN FUN -- 10-11:30 a.m. Saturday. Children 10 and younger will decorate pumpkins. Bowie Community Center, 3209 Stoneybrook Dr., Bowie. $3. 301-464-1737.
HALLOWEEN PARTY -- 1-3 p.m. Saturday. Traditional Halloween party games and treats for children 12 and younger. Seat Pleasant Activity Center, 5720 Addison Rd., Seat Pleasant. Free. 301-773-6685.
COSTUMES ON PARADE AND MAGIC SHOW -- Noon-2 p.m. Saturday. Ages 6-12 show off their Halloween costumes and watch a magic show. Rollingcrest-Chillum Community Center, 6120 Sargent Rd., Chillum. Free. 301-853-2005.
HALLOWEEN EXTRAVAGANZA -- 1-3 p.m. Saturday. Halloween party for ages 6-17. Columbia Park/Kentland Community Center, 2411 Pinebrook Ave., Landover. $2. 301-386-2278.
AFTERNOON HALLOWEEN PARTY -- 2 p.m. Saturday. Costume contest and magic show for children 10 and younger. Berwyn Heights Community Center, 6200 Pontiac St., Berwyn Heights. Free. 301-345-2808.
GREENBELT HALLOWEEN PARTY -- 11:30 a.m. Saturday. Music, puppets, crafts and light refreshments. For ages 1-13. Greenbriar Condominiums, Terrace Room, 7600 Hanover Pkwy. $3 in advance, $4 at the door. 301-441-1096.
HYATTSVILLE HALLOWEEN PARTY -- 4:30-6:30 p.m. Saturday. Parade, costume contests, magic show and refreshments. Hyattsville Municipal Building, 4310 Gallatin St. Free. 301-985-5020.
HALLOWEEN COSTUME PARTY -- 4-7 p.m. Saturday. Costume party with games and contests for all ages. Parents are encouraged to dress in costume. Temple Hills Community Center, 5300 Temple Hill Rd., Temple Hills. Free. 301-894-6616.
HYATTSVILLE HALLOWEEN PARTY: Parade, costume contests, magic show and refreshments. 4:30-6:30 p.m. tomorrow, Hyattsville Municipal Building, 4310 Gallatin St. Free. 301-985-5020.
ANNUAL HALLOWEEN PARTY -- 5-7 p.m. Saturday. A night of ghouls, ghosts and goblins with music and refreshments for ages 5-12, who are encouraged to wear costumes. North Brentwood Community Center, 4012 Webster St., North Brentwood. Free. 301-864-0756.
HALLOWEEN COSTUME PARTY -- 6-8:30 p.m. Saturday. Ages 11-14 dress in costume and enjoy music, food and frights. Mount Rainier Nature and Recreation Center, 4701 31st Pl., Mount Rainier. $5. 301-927-2163.
HALLOWEEN KIDDIE COSTUME CABARET -- 6:30-8:30 p.m. Saturday. Music, dancing, games, a costume contest and refreshments for ages 5-12. Stephen Decatur Community Center, 8200 Pinewood Dr., Clinton. $3. 301-297-4648.
FLIGHT NIGHT -- 7-9 p.m. Saturday. Sixth annual costume party for children and families, with arts and crafts, haunted hayrides, contests and spooky activities. College Park Aviation Museum, 1985 Cpl. Frank Scott Dr., College Park. $4. 301-864-6029.
"TOUR OF TERROR" HAUNTED HOUSE -- 7-9 p.m. Saturday. Ghouls, ghosts and goblins await, for those who are 8 and older. Tucker Road Community Center, 1771 Tucker Rd., Fort Washington. $5. 301-248-4404.
HALLOWEEN SKATE -- 1-3 p.m. Sunday. Ages 6-12 wear costumes and roller-skate to music. Bladensburg Community Center, 4500 57th Ave., Bladensburg. $3. 301-277-2124.
BOWIE HARVEST FESTIVAL -- 5:30-8 p.m. Sunday. A moon bounce, pony rides, carnival games, clowns, face painting, light refreshments and more. For ages 2-12 with or without costumes, accompanied by an adult. Cornerstone church, 16010 Annapolis Rd. Free. 301-262-6266 or www.cag.org.
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