De Quincey, Thomas, 1785-1859 (Personal Name)

His Confessions of an English opium-eater ... 1866.

Opium, 1999: p. 13 (Tomas de Kvinsi; b. Aug. 16, 1785; d. Dec. 8., 1859)

The Faber book of opera, 2000: p. viii (Thomas de Quincy) p. 195 (Thomas de Quincey)

Smith, Lloyd E. How to improve your conversation, c1927: t.p. (Thomas DeQuincey)