Published Sources
            Full citations are given in the Bibliography

N. Baburina and M. Avvakumov, Russian Soviet Ballet in Posters.
George Balanchine. Complete Stories of the Great Ballets.
Cyril Beaumont. The Diaghilev Ballet in London.
Alexandra Danilova. Choura.
Tamara Geva. Split Seconds.
S. L. Grigoriev. The Diaghilev Ballet, 1909 1929.
Harvard Theater Collection. George Balanchine.
Lincoln Kirstein. Movement & Metaphor.
Maryinsky Theater. The Balanchine Century.
Mikhail Mikhailov. My Life in Ballet.
Nancy Reynolds. Repertory in Review.
Yuri Slonimsky. Balanchine: The Early Years, in Francis Mason, comp., I Remember Balanchine.
Bernard Taper. Balanchine: A Biography.