found:Canada, Theresa J. Desegregation of the New York City schools, 2017:eCIP subj. (PS 6, an elite New York City Public School ; school was named after Mrs. Lillian Devereaux Blake ; PS 6 was also known as the "silk-stocking school." The original school building was located on the east side of 85th Street and Madison Avenue, in the area of the Upper East Side known as Yorkville ; The original school building opened in May 1894)
found:Wikipedia website, viewed June 4, 2018(PS 6 ; P.S. 6, The Lillie Devereaux Blake School, is a public elementary school located on the Upper East Side of Manhattan, New York City. Founded in 1894) -https://en.wikipedia.org/wiki/PS_6