1834, L[etitia] E[lizabeth] L[andon], chapter XXVIII, in Francesca Carrara. […], volume II, London: Richard Bentley, […], (successor to Henry Colburn), page 297
1986 June 6, Richard Feynman, “Personal observations on the reliability of the Shuttle”, in Presidential Commission on the Space Shuttle Challenger Accident, Report to the President