Classics of the Road

More than 500 vintage cars will be on display at Rockville's Antique and Classic Car Show, Saturday from 10 to 4 at Rockville Civic Center Park, Baltimore Road and Edmonston Drive. Admission is free. Call 301/309-3330 or 301/309-3334.

Birthday Celebrations

The John Addison Concert Hall at Harmony Hall Regional Center celebrates its 10th anniversary with music, dance, storytelling, pumpkin carving, art demonstrations and magic shows Saturday from 10 to 4. The center is at 10701 Livingston Rd. in Fort Washington. Admission is free; some workshops will have fees. Call 301/203-6070 (TDD: 301/203-3803).

The Montpelier Cultural Arts Center, at 12826 Laurel-Bowie Rd., Laurel, marks its 20th anniversary Sunday from noon to 5 with jazz performances at 2 by Buck Hill, Ronnie Wells, Ethel Ennis and others. Admission is free. Call 301/953-1993 (TDD: 301/490-2329).

Gallery's Open House

Enjoy one-man plays about Benjamin Franklin and Theodore Roosevelt; listen to storyteller Jon Spelman and his tales from American rural and urban traditions; take part in a safari hunt; and create your own portrait at the National Portrait Gallery's Open House, Sunday from noon to 5. Admission and all activities are free. The gallery is at Eighth and F streets NW (Metro: Gallery Place/Chinatown). Call 202/357-2700 (TDD: 202/357-1729).

Bookfair

Thousands of used books, art objects, and rare stamps and coins are on sale at Bookfair '99, sponsored by the Association of American Foreign Service Women, Saturday and Sunday and Oct. 23 and 24 from 10 to 4 at the State Department, 23rd and C streets NW (enter on C Street). Admission is free. Call 202/223-5796.

On the Ice

Test your skills as a hockey goalie, watch competitions in stick handling and goal shooting and see about 100 local teams compete in street and in-line hockey tournaments at NHL Breakout '99, Saturday and Sunday from 8 to 5 on Pennsylvania Avenue between Third and Seventh streets NW (Metro: Archives/ Navy Memorial, Judiciary Square). It's all free; team registration is closed. Call 202/628-3200, Ext. 4642.

D.C. United in Playoffs

D.C. United will face the Miami Fusion in the first round of the Major League Soccer playoffs Saturday at 7:30 at RFK Stadium (Metro: Stadium/Armory). Tickets are $18 to $38 from Ticketmaster, 202/432-7328.

Consort Opens Season

The Folger Consort opens its season with "Italia Mia," a program of Italian Renaissance music, Friday at 8, Saturday at 8 and Sunday at 2 and 5:30 at the Folger Shakespeare Library, 201 East Capitol St. SE. Tickets are $24 (discounts available for seniors and students). Call 202/544-7077.