Kresley Cole (2012). “The Brothers Wroth: Warlord Wants Forever, No Rest for the Wicked, Dark Needs at Night's Edge, Untouchable”, p.23, Simon and Schuster
Attributed in Wash. Post, 30 Nov. 1952. The Post article is quoting an article in Quick Magazine from the summer of 1951. According to a letter by William S. Rubin in the New York Times, 5 Jan. 1969, this is "a trumpery originated in Il Libro Nero published by Giovanni Papini in 1951."
Madeline Kahn, on The Road Back to Broadway; At the National Theatre, Remaking Billie Dawn for A New 'Born Yesterday'" by Joe Brown, The Washington Post, October 26, 1988.