H. Ferriss, ‘The New Architecture’, New York Times, 19/3/1922.

Kate Holliday, ‘Walls as Curtains: architecture and humanism in Ralph Walker’s skyscrapers of the 1920s’, Studies in the Decorative Arts, 16:2 (Spring—Summer 2009), 50; Daniel Michael Abramson, Skyscraper Rivals: the AIG Building and the architecture of Wall Street (Princeton, 2001), p. 191.