New York City Ballet

Maria Calegari of The New York City Ballet performs as Titania with an unidentified dancer playing the role of Bottom in George Balanchine's ''A Midsummer Night's Dream'' as part of the ''Live From Lincoln Center'' PBS series.

Choreographer George Balanchine work in a dance studio with Igor Stravinsky and dancers during the production of ''Agon'' in 1957.

3 photos on one sheet: (upper) Vera Zorina performs with unidentified dancers, all of the New York City Ballet, in George Balanchine's ''Persephone''; (lower left) Mel Tomlinson and Heather Watts of the New York City Ballet perform in George Balanchine's ''Agon''; (lower right) Suzanne Farrell of the New York City Ballet performs in George Balanchine's solo dance ''Variations''.

George Balanchine and Suzanne Farrell perform in ''Don Quixote'' in a promotional for Robert Tracy's book ''Balanchine's Ballerinas: Conversations With the Muses.''

Suzanne Farrell and Peter Martins of the New York City Ballet perform together in ''Ballerinas: Dances by Peter Martins,'' which was aired on PBS television as part of the Great Performances Dance in America series.

Choreographer George Balanchine (center) works with his principal dancers Patricia McBride and Mikhail Barishnikov as they prepare to dance in ''Choreography by Balanchine, Part 3.''

Peter Martins of the New York City Ballet performs with Suzanne Farrell in George Balanchine's ''Diamonds,'' which aired on PBS as part the the Great Performances production of ''Choreography by Balanchine, Part 2.''

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.

Peter Martins of the New York City Ballet performs with Kay Mazzo in Balanchine's ''Serenade,'' which aired on public broadcasting stations on television as part of the Great Performances series.

Balerina Kay Mazzo of the New York City Ballet performs with Peter Martins in George Balanchine's dance ''Stravinsky Violin Concerto'' which aired on PBS television stations as part of ''Choreography by Balanchine, Part 2'' on Great Performances.