What's DoingHUNT VALLEY ANTIQUES SHOW Friday 11 to 8, Saturday 11 to 7 and Sunday 11 to 5. More than 40 exhibitors show furniture, housewares, paintings, books, clocks and home accessories. $12. Holiday Inn Select, 2004 Greenspring Drive, Timonium. 202-537-1169 or 410-366-1980. RECREATIONAL VEHICLE SHOW Friday-Saturday 11 to 9, Sunday 11 to 6. Displays by recreational vehicle dealers and accessory vendors. $8, ages 11 and younger free. Maryland State Fairgrounds, 2200 York Rd., Timonium. 410-561-7323 or 410-252-0200.

"MONSTER JAM" Friday at 7:30, Saturday at 2 and 7:30, and Sunday at 2. Giant trucks and other vehicles navigate obstacle courses and perform stunts. $5 to $27. 1st Mariner Arena, 201 W. Baltimore St., Baltimore. 202-397-7328 or 410-347-2010.

BENEFIT ESTATE SALESaturday 10 to 5. Jewelry, watches, crystal, silver, china, linens, personal and decorative accessories, collectibles and household items. Claude Moore Colonial Farm, 6310 Georgetown Pike, McLean. 703-442-7557 .

GREAT TRAIN EXPO Saturday and Sunday 10 to 4. More than 200 tables with O gauge, N and Z scale and Lego train displays, plus vendors and door prizes. $7 for both days, 12 and younger free. Show Place Arena, 14900 Pennsylvania Ave., Upper Marlboro. 630-279-4048 or 301-952-7900.

LUXURY HOME SHOW Saturday-Sunday 10 to 5. 150 exhibitors of home and kitchen design, furnishings and accessories. $12. Turf Valley Resort & Conference, 2700 Turf Valley Road, Ellicott City. 443-512-0265 or 410-465-1500, 888-833-8873.

SPORTS CARD & COMIC BOOK SHOW Saturday 10 to 3:30. Sports and non-sports cards, memorabilia, comic books and supplies. $3. Holiday Inn Tysons Corner, 1960 Chain Bridge Rd., McLean. 301-990-4929 or 703-893-2100.

TRAVEL & GOLF EXPO Saturday 10 to 5 and Sunday 11 to 4. Displays, information and other activities, including a putting green, climbing wall, children's events and entertainment. $5, $10 for a family of four. Baltimore Convention Center, 1 W. Pratt St., Baltimore. 410-332-6571 or 410-649-7000.

For Black History MonthAT MOUNT VERNON Friday-Wednesday, presentations by historic interpreters from 10 to 2 at the slave quarters, wreath-laying ceremony at noon at the Slave Memorial. On the George Washington Parkway about eight miles south of Alexandria. 703-780-2000.

AT UNIVERSITY OF MARY WASHINGTON UMW Jazz Ensemble, Friday at 7:30. Step show and competition, Saturday at 6:30 ($7). "HIV/AIDS Spiritual Gala" concert and fundraiser, Sunday at 5. Screening of "Palante Simpre Palante: The Young Lords," Tuesday at 5. 1301 College Ave., Fredericksburg. 540-654-1044 or 540-654-1055.

"ARE YOU READY MY SISTER?" Friday at 10:15 and noon and Saturday at 11. Underground Railway Theatre's play about Harriet Tubman and the Quaker women who helped 300 slaves to freedom. $6. Publick Playhouse, 5445 Landover Rd., Cheverly. 301-277-1710.

LECTURE AND MUSIC Friday at 11:30. Brown University Associate Dean Valerie Wilson's talk is followed by the APL Gospel Choir. Free. Johns Hopkins U. Applied Physics Laboratory, 11100 Johns Hopkins Rd., Laurel. 240-228-5000.

"ORIXAS" AND "ILE AIYE" Friday at noon. Films on African influences in Brazil and discussion with anthropologist Michael Atwood Mason. Free. Baird Auditorium, National Museum of Natural History, 10th and Constitution NW. 202-633-1000.

GUIDED TOURS OF ARLINGTON HOUSE & SLAVE QUARTERS Friday-Wednesday at 2. Learn about the lives of slaves on Arlington Plantation and their relationship with Lee's family. Free, but reservations recommended. Arlington House, Robert E. Lee Memorial, Arlington National Cemetery, Arlington. 703-235-1530.

"BLAZING TRAILS: BLACK COWBOYS AND WOMEN" LECTURE Friday at 6:30. Members of East Coast Rough Riders discuss Buffalo Soldiers and Stagecoach Mary. Mary McLeod Bethune House, 1318 Vermont Ave. NW. 202-673-2402.

LECTURE AND MUSIC Friday at 8:15. Howard U. professor James Norris and student vocalists present "The History and Performance of the Negro Spiritual." Free. St. John's College, Francis Scott Key Auditorium, 60 College Ave., Annapolis. 410-626-2539.

AT BANNEKER-DOUGLASS MUSEUM "Akeelah and the Bee," Saturday at 12:30. Free. 84 Franklin St., Annapolis. 410-216-6180 or 410-974-2893.

MARDI GRAS EVENT Saturday 10 to 2. A celebration of New Orleans through storytelling, music making, dressing up in costumes, creating masks, watching videos of past Mardi Gras events and learning about the Black Mardi Gras Indians. Anacostia Museum , 1901 Fort Pl. SE. 202-633-1000 or 202-633-4866.

AFRICAN-AMERICAN HERITAGE TOUR Saturday at 10:30. Tour key sites in Annapolis history, including the Kunta Kinte-Alex Haley Memorial and the Thurgood Marshall Memorial. $14, children 3 to 11 $4, ages 2 and younger free. HistoryQuest, 99 Main St., Annapolis. 410-268-7601.

"THE MEETING" Saturday at 1. Playwright Jess Stetson's play is an imagined conversation between Martin Luther King Jr. and Malcolm X. Free, but reservations required. National Postal Museum Discovery Center, 2 Massachusetts Ave. NE. 202-633-4757 or 202-633-1000.

STORER COLLEGE TOUR Saturday at 2. Tour the historically black college, which closed in 1955, with a park ranger. Harpers Ferry National Historical Park Visitor Center, U.S. 340, Harpers Ferry. 304-535-6029 or 304-535-6298.

COOKING DEMONSTRATION Sunday noon to 4. Members of the Riversdale Kitchen Guild and author Michael Twitty re-create traditional African-American foods from the 19th century. $3, seniors $2, students $1, ages 4 and younger free. Riversdale House Museum, 4811 Riverdale Rd., Riverdale. 301-864-0420.

LECTURE AND SOUL FOOD TASTING Sunday 2 to 4. The NAACP's annual lecture and tasting features a lecture on the theme, "From Slavery to Freedom," followed by samples of African American traditional foods. Free, but reservations recommended. Alexandria Black History Museum, 902 Wythe St., Alexandria. 703-838-4356.

"A MOMENT IN HISTORY: AFRICAN AMERICANS WHO KNEW THE LINCOLNS" Monday at 10, 1 and 6:30. Interpretive presentation. Free, but reservations required. Ford's Theatre, 511 10th St. NW. 202-426-6924.