New York City Ballet

Violette Verdy and Arthur Mitchell, along with the New York City Ballet ensemble, perform in Brigit Cullberg's ''Medea.''

Merrill Ashley, of the New York City Ballet, performs a leap in George Balanchine's ballet ''Ballo della Regina.''

Melissa Hayden and Edward Villella, both of the New York City Ballet, perform together in George Balanchine's ballet ''A Midsummer Night's Dream.''

Melissa Hayden and an unidentified dancer, both of the New York City Ballet, perform together in George Balanchine's ballet ''A Midsummer Night's Dream.''

Melissa Hayden and Edward Villella, both of the New York City Ballet, perform together with the ensemble in George Balanchine's ballet ''A Midsummer Night's Dream.''

Photographs of Arthur Mitchell of the New York City Ballet performing in George Balanchine's dance ''Agon.''

Photographs of Francisco Moncion of the New York City Ballet performing in varioius dances.

Photographs of the New York City Ballet ensemble performing in various dances.

Photographs of the New York City Ballet ensemble performing in various dances.

Two photographs on one sheet: Balerina Kay Mazzo of the New York City Ballet performs in George Balanchine's ''Nutcracker'' and informal portrait of Mazzo backstage at the same performance.