Since he left the presidency, Jimmy Carter has become well known for his humanitarian activities, and because of them, the American Institute for Public Service has named him to this year's list of Jefferson Award winners. The former president is being recognized for his role in fighting for world peace, free elections in Nicaragua and the needs of the homeless.

The winners of the award will be recognized at tonight's dinner at the National Building Museum. Each will receive a medallion and $5,000 in tomorrow's ceremonies at the Supreme Court. Baseball great Hank Aaron will present the awards. Carter, however, will not be here for any of the activities. He is in Tijuana, Mexico, where he will be for another week, sleeping in a dormitory and using his carpentry skills to build housing on behalf of the organization Habitat for Humanity. Out and About Yes, it is true that super palimony lawyer Marvin Mitchelson is handling Juanita Leonard's divorce from champ Sugar Ray Leonard. The usually verbose attorney, who has often proved you can get blood from a turnip, didn't have much to say yesterday other than that he'll probably have something to report early next month. He wouldn't hint, but you can put up your paycheck that it'll be expensive for Sugar Ray ...

J.T. Kuhlman, who supervised the reopening of the historic Willard Hotel in 1986 and managed it until 1988, has been named president of Inter-Continental Hotels and will be in charge of all of the corporation's 95 hotels worldwide, including the Willard ...

Rex Harrison, who forever will be remembered for his Tony- and Oscar-winning performances as Henry Higgins in "My Fair Lady," was memorialized yesterday for his charm that "was not always evident offstage." In her brief address, Maggie Smith, who is starring in "Lettice & Lovage," drew laughs as she talked of his impatience and his often stormy relationships with directors and leading ladies. Among the fellow performers who gathered in New York's Church of the Transfiguration to remember Harrison, who died June 2 at age 82, were Claudette Colbert, Glynis Johns, Douglas Fairbanks Jr., Kitty Carlisle Hart, Zoe Caldwell, Eileen Atkins and Cliff Robertson ...

Another arts organization -- the Oregon Shakespeare Festival -- has rejected a pending grant from the National Endowment for the Arts. Objecting to an NEA requirement that grant recipients certify they will refrain from presenting or exhibiting offensive material, a statement from the festival's board of directors described such restrictions as "censorship." In explaining the decision to reject the grant, the festival's artistic director, Jerry Turner, said such restrictions "are a heavy weight on those whose mission in life it is to create theater, for when we sit down at the typewriter or begin to stage a play, we will find ourselves asking, 'Will this offend anyone?' " ...

There's a Pryor political dynasty building in Arkansas. Little Rock attorney Mark Pryor, son of Sen. David Pryor, has been elected to the state legislature. Quite an accomplishment for a man of 27. His dad, however, was elected to the state legislature when he was 26 ...