In a magazine article by Wilde, originally uncredited.
'The American Man' in The Court and Society Review Vol. IV, No. 145, April 13, 1887, pp. 341-343.
Bibliography of Oscar Wilde
by Stuart Mason, 1914
LONDON | T. WERNER LAURIE LTD.
Reproduced here: The Amercian Man
Not reprinted in Miscellanies.
QUOTATIONS BY OSCAR WILDE MADE IN OR ABOUT AMERICA