Source: Chris Chiei, How the Hut Came to Be, (NJ, Princeton Architecture Press, 2005)
Source: "Timeline: a history of Prefabricated Housing," Home Delivery: Fabricating the Modern Dwelling. Accessed on Dec 10, 2012
Source: Alice Sparberg Alexiou, The Flatiron Building: The New York Landmark and the Incomparable City that Rose with it. ( NY. St. Martin's Press, 2010)
Source: Ryan E. Smith, Prefab Architecture: A Guide to Modular Design and Construction. Hoboken: John Wiley & Sons, Inc., 2010.