New York City Ballet

Anthony Blum performs in the New York City Ballet production of ''Dumbarton Oaks.''

Helgi Tomasson of the New York City Ballet performs in Jerome Robbins' ballet ''Dybbuk Variations.''

Nicholas Magallanes performs with an unidentified dancer in ''Episodes.''

The New York City Ballet ensemble performs in George Balanchine's ''Episodes.''

Jerome Robbins performs as one of the three sailors in his dance ''Fancy Free;'' image from Clive Barnes' book ''Inside American Ballet Theatre.''

Yvonne Borree of the New York City Ballet performs as a guest dancer with the Santa Fe Festival Ballet in ''Fearful Symmetries.''

Melissa Hayden and Francisco Moncion, both of the New York City Ballet, perform together in George Balanchine and Jerome Robbins' ballet ''Firebird.''

Melissa Hayden and Francisco Moncion, both of the New York City Ballet, perform together in George Balanchine and Jerome Robbins' ballet ''Firebird.''

Gen Horiuchi, a principal dancer with the New York City Ballet, performs as a guest artist with the Tokyo Festival Ballet in an unidentified dance.

Peter Martins of the New York City Ballet performs with ballerina Patricia McBride in Jerome Robbins' ballet ''Goldberg Variations.''