At the Art Directors Club of Metropolitan Washington's 38th annual show and exhibition, you can see how the best graphic designers, photographers and illustrators communicate through design in a collection of more than 180 works by area professionals. The show is open 8:30 to 6:30 Monday through Saturday until July 10 in the lobby of 1201 Pennsylvania Ave. NW. Call 955-5775.

POOCHIE KEEN The National Capital Kennel Club 82nd All-Breed Dog Show is 9 to 5 Sunday with more than 1,500 dogs competing in seven categories. Admission is $2, $1 under 12 at Rosecroft Raceway in Oxon Hill. 840-9366.

CONTINUATIONS Don't forget that the 21st annual Festival of American Folklife continues on the Mall between 12th and 14th streets 11 to 5:30 Friday, Saturday and Sunday with music, arts, crafts and foods organized around the lore of Michigan and the "Cultural Conservation" theme which focuses on the nation's multilingual heritage. Call 357-4574.

LATE-NIGHT LARRY LIVE Fans of Mutual Radio's late-night "Larry King Show" can catch Mr. Deep Pipes in action during a live broadcast from the Monticello Suite of the Jefferson Hotel, 16th and M NW, Friday from 11 p.m. to 3 a.m. King's guests are political satirist Mark Russell, the Big Apple's veteran rabble-rousing disc jockey Don Imus and "Acting Shakespeare" star Ian McKellen. It's free. 685-2000.