"Spidey Bites: Stan Lee’s Secret for Saving Spider-Man the Musical? More Stan Lee!". Interview with Eric Spitznagel, www.vanityfair.com. March 10, 2011.
Henry Moseley's letter to Margery Moseley (February 2, 1913), as quoted in "H. G. J. Moseley: The Life and Letters of an English Physicist 1887-1915" edited by J. L. Heilbron (p. 201), 1974.