What's Doing"SUPPLIED FOR SURVIVAL: Meriweather Lewis at Harpers Ferry," Friday 2 to 9, Saturday 9 to 5, Sunday 9 to 5. Exhibits, talks, living history portrayals and other activities commemorating the Lewis & Clark Expedition 200 years ago. Park entrance $5. Harpers Ferry National Historical Park, Harpers Ferry, W. Va. 304-535-6748.

PROFESSIONAL BULL RIDERS Invitational Competition, Friday and Saturday at 8. $10 to $100. First Mariner Arena, 201 W. Baltimore St., Baltimore. 202-432-7328 or 410-347-2010.

BENEFIT GALA -- Friday at 7, for the Alexandria Volunteer Bureau. $40 per person, $70 per couple. Virginia Theological Seminary, 3737 Seminary Rd., Alexandria. 703-836-2176.

RUMMAGE SALE -- Saturday 8 to noon. Redeemer Lutheran Church, 1545 Chain Bridge Rd., McLean. 703-356-3567.

RUMMAGE SALE -- Saturday 9 to 2. Hughes United Methodist Church, 10700 Georgia Ave., Wheaton. 301-949-8383.

SPRING GARDEN CELEBRATION -- Saturday through April 5 from 9 to 5. Displays of blooming bulbs, exhibitions, gardening demonstrations, children's activities. $10 under 12 $5. American Horticultural Society at River Farm, 7931 E. Boulevard Dr., Alexandria. 703-768-5700.

NATIVE PLANT SALE -- Saturday 10 to 2. National Arboretum, 3501 New York Ave. NE. 202-245-5898.

WILDLIFE ART SHOW -- Saturday and Sunday 10 to 4:30. Displays by about 50 wildlife artists and artisans. Admission free. Reception with the artists, Saturday at 6:30; $25. National Wildlife Visitor Center, Patuxent 10901 Scarlet Tanager Loop, Laurel. 301-497-5789.

ANTIQUES FAIR -- Saturday 10 to 5, Sunday 10 to 4. About 100 dealers. $6. Howard County Fairgrounds, Route 144, West Friendship. 410-228-8858.

LATIN AMERICAN AND Caribbean Festival, Saturday noon to 5. Music by Mariachi Los Amigos and other bands, crafts fair, food vendors. Westlake High School, 3300 Middletown Rd., Waldorf. 301-392-1775.

"ART-O-MAT" ART FAIR -- Saturday 1 to 5. Artists display their work and demonstrate their techniques. Ellipse Arts Center, 4350 N. Fairfax Dr., Arlington. 703-228-7710.

BENEFIT AUCTION of goods and services, Saturday at 7. $25, for the Reston Children's Center. Sheraton Reston, 11810 Sunrise Valley Dr., Reston. 703-476-8150.

BENEFIT GALA -- Saturday at 7, for the Washington Symphony Orchestra. $175 per person, $300 per couple. Patterson House, 15 Dupont Circle NW. 202-246-1007.

BENEFIT CASINO NIGHT -- Saturday at 8, for the National Kidney Foundation. $95. National Museum of Women in the Arts, 1250 New York Ave. NW. 202-244-7900.

IRISH WOLFHOUND SHOW -- Sunday and Monday at 8 a.m., by the Potomac Valley Irish Wolfhound Club. Park entry $4 per car. Quiet Waters Park, 600 Quiet Waters Park Dr., Annapolis. 410-263-6876 or 410-643-2015.

SPORTS CARD SHOW -- Sunday 10 to 4. About 50 dealers. Autograph sessions with Billy Kilmer and Chris Hanburger, noon to 2. Hilton Garden Inn, 3950 Fair Ridge Rd., Fairfax. 301-990-4929.

COMIC BOOK AND NON-SPORTS Card Show, Sunday 11 to 4. $2.50, under 7 free. Holiday Inn, 2003 Greenspring Dr., Timonium. 410-569-8357.

CRAFTS FAIR -- Sunday 2:30 to 5:30, by Lithuanian Scouts of the Washington Area. Lithuanian folk art, Easter eggs, jewelry. St. Elizabeth's School, 917 Montrose Rd., Rockville. 703-569-5370.

BENEFIT ART AUCTION -- Sunday at 7:30; preview at 6:30. $10. Hebrew Day Institute, 1840 University Blvd. W., Silver Spring. 301-649-5808.

BENEFIT WINE TASTING -- Wednesday at 6. $75, for Artscape. The Cloisters, 10440 Falls Rd., Brooklandville. 877-225-8466 or 888-330-9571.