Fiftieth birthday celebrations for the National Gallery of Art include an exhibition to show off its birthday pres-ents, on view through June 16.

"Art for the Nation: Gifts in Honor of the 50th Anniversary of the National Gallery of Art" consists of some 320 works of art given and pledged to the gallery by 150 donors from 19 states and the District of Columbia and five foreign countries.Among the exhibits are 31 of the surviving 69 original wax sculptures by Degas, and Cezanne's "Boy in a Red Waistcoat," from Paul Mellon. Also included are "Marcelle Lender Dancing the Bolero in Chilperic," by Toulouse-Lautrec, from Betsey Cushing Whitney; and Bellini's "Saint Anthony Abbot and Saint Bernadino of Siena," from an anonymous donor.

Living artists who have contributed works of art for the anniversary include Richard Diebenkorn, Robert Frank, Helen Frankenthaler, Jasper Johns, Ellsworth Kelly and Roy Lich-ten-stein.