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.
Sir Humphry Davy, John Davy (1839). “The Collected Works of Sir Humphry Davy, Bart. ...: Memoirs of the life of Sir Humphry Davy, by his brother, John Davy”, p.26