The 22 acre complex located between 48th and 51st streets in New York City was designed by what architect?
Wallace K. Harrison
Title: Rockefeller Center
Passage: Rockefeller Center is a large complex consisting of 19 high-rise commercial buildings covering 22 acre between 48th and 51st Streets in New York City.  Commissioned by the Rockefeller family, it is located in the center of Midtown Manhattan, spanning the area between Fifth Avenue and Sixth Avenue.
Title: Julian Street, Jr. residence
Passage: The Julian Street, Jr. residence is an early Modernist fieldstone house in Briarcliff Manor, New York.  The house was designed by the New York architect Wallace K. Harrison for Julian Street, Jr. and his wife, Narcissa, in 1938.  Harrison, primarily known as a monuments architect through his works in New York City like Rockefeller Center and the United Nations complex, also designed a few private residences.  Harrison designed and built the Julian Street, Jr. residence at 710 Long Hill Road West as an unconventional experiment in the early Modernist architecture that was just being introduced in America during the late 1930s.
Title: Harlem River Houses
Passage: The Harlem River Houses is a New York City Housing Authority public housing complex located between West 151st and West 153rd Streets and between Macombs Place and the Harlem River Drive in the Harlem neighborhood of Manhattan, New York City.  The complex, which covers 9 acre , was built in 1936-37 and opened in October 1937 – one of the first two housing projects in the city funded by the Federal government – with the goal of providing quality housing for working-class African Americans.  It has 574 apartments.
Julian Street, Jr. residence Rockefeller Center