Impressions of America (1906). The Newark (Ohio) Daily Advocate, 20 Apr. 1883, describes an afterdinner speech made by Wilde in Paris about his experiences in the United States: "The brightest and best of the many stories he related was one to the effect that at a ball in Leadville he saw a notice over the piano which read: 'Please don't shoot the pianist. He is doing his best.' "
Oscar Wilde (1997). “Collected Works of Oscar Wilde: The Plays, the Poems, the Stories and the Essays Including De Profundis”, p.1051, Wordsworth Editions
Oscar Wilde, Russell Jackson, Joseph Bristow, Ian Small (2000). “The Complete Works of Oscar Wilde: The picture of Dorian Gray : the 1890 and 1891 texts”, p.128, Oxford University Press on Demand
Oscar Wilde (2013). “The Picture of Dorian Gray: The Story of a Fashionable Young Man Who Sells His Soul for Eternal Youth and Beauty (Beloved Books Edition)”, p.37, Lulu Press, Inc
Oscar Wilde (1997). “Collected Works of Oscar Wilde: The Plays, the Poems, the Stories and the Essays Including De Profundis”, p.3, Wordsworth Editions