Nathan Haskell Dole, Omar Khayyam the Tentmaker: A Romance of Old Persia, cover design by Kahlil Gibran, Boston: L.C. Page & Company, 1899 (reprint 1902).

Published on 20 June 2019, In Digital Archive

Benedicto Chuaqui, "Nuevas Notas sobre Omar Khayyam", La Reforma, Jun 28, 1941, pp. 5-6.

Published on 23 March 2020, In Digital Archive