Willis, Carol (1992). Ward, David; Zunz, Olivier (eds.). "Form follows finance: The Empire State Building". Landscape of Modernity: Essays on New York City, 1900-1940: 181. Archived from the original on 2018-01-11. Retrieved 2017-02-01.
Willis, Carol (1992). Ward, David; Zunz, Olivier (eds.). "Form follows finance: The Empire State Building". Landscape of Modernity: Essays on New York City, 1900-1940: 181. Archived from the original on 2018-01-11. Retrieved 2017-02-01.