1. Michael Riordan, “The Demise of the Superconducting Super Collider,” Physics in Perspective 2 (2000), 411-425; idem, “A tale of two cultures: Building the Superconducting Super Collider, 1988-1993,” Historical Studies in the Physical and Biological Sciences 32 (2001), 124–144.
2. David Ovason, The Secret Architecture of Our Nation’s Capital: The Masons and the Building of Washington, D.C. (New York: HarperCollins Publishers, 2000), p. 19.
3. Albert E. Moyer, Joseph Henry: The Rise of an American Scientist (Washington and London: Smithsonian Institution Press, 1997), p. 67.
4. “Histories of the Smithsonian Institution’s Museums and Research Centers,” “Smithsonian Astrophysical Observatory,” website < http://siarchives.si.edu/history/exhibits/historic/history.htm >, pp. 11–12.
5. David Chandler, “Energy research is the key, Chu says,” MITnews (May 13, 2009), website < http://web.mit.edu/newsoffice/2009/chu-0513.html >, pp. 1–2; on p. 1.