Washington Monument
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Harvey, Frederock L. (1903): History of the Washington National Monument Society. United States Government Printing Office, Washington (États-Unis).
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Hansen, Brett (2008): Orchestrating the Obelisk: The Washington Monument. Dans: Civil Engineering Magazine, v. 78, n. 7 (juillet 2008), pp. 38-41.
https://doi.org/10.1061/ciegag.0000812
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Tamaro, Mark J. / O'Connor, John G. (1999): Scaling the Monument. Dans: Civil Engineering Magazine, v. 69, n. 4 (avril 1999).
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Dupré, Judith (1996): Skyscrapers. Black Dog & Loventhal, New York (États-Unis), pp. 12-13.
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Dupré, Judith / Smith, Adrian (2008): Skyscrapers. A History of the World's Most Extraordinary Buildings. 2ème édition, Black Dog & Leventhal Publishers, Inc., New York (États-Unis), ISBN 978-1-57912-787-9, pp. 14-15.