William forsythe ballet hi-res stock photography and images - Alamy
Professional Dance – Helen Pickett
Arthur Elgort | Wilhelmina Frankfurt, New York City Ballet (1979) | Available for Sale | Artsy
Firstext-Frankfurt Ballet - YouTube
New York City Ballet production of "Jewels" (Rubies) with Wilhelmina Frankfurt, choreography by George Balanchine (New York) - NYPL Digital Collections