New York City Ballet

Choreographer George Balanchine teaches a ballet class at the School of American Ballet in the early 1960s. Also distinguishable are Patricia Wilde, Maria Tallcheif, Kay Mazzo, Suzanne Farrell, Melissa Hayden and Jacques d'Amboise.

Choreographer George Balanchine works with two children on ''Don Quixote'' and Karin von Aroldingen and Jean-Piere Bonnefous perform in his ''Violin Concerto.''

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

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.''

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.

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.

Ballerina Patricia McBride performs as the toy heroine with Mikhail Baryshnikov as the tital character in George Balanchine's ''The Steadfast Tin Soldier'' as part of the PBS special for Dance in America ''Choreography by Balanchine, Part 4.''

Ballerina Patricia McBride performs as the Christmas doll with the ensemble in George Balanchine's ''The Steadfast Tin Soldier'' as part of the PBS special for Dance in America ''Choreography by Balanchine, Part 4.''