The New York City Public Library for the Performing Arts has the following two films of Ms. Parks while at the School for the Performing Arts:
Call # *MGZHB 12-924 Negro spirituals (Motion Picture) A performance by senior modern dance students of the famous New York City School of Performing Arts. The third number is Trina Frazier's performance of "Swing Low, Sweet Chariot."
Unfortunately, the film is shrunken and brittle and must be watched with a hand viewer. Even so, it is quite an experience to see Trina's silent, ghostly image flutter so beautifully across the darkened stage.
Call # *MGZHB 6-953 Ritual and dance (Motion picture)
A performance by junior modern dance students of the School of Performing Arts. Trina Frazier is among the dancers.
The helpful staff was unable to locate this film while I was there. I hope to be able to see it on a subsequent visit.