This article needs additional citations for verification. (August 2010) (Learn how and when to remove this template message)
His drawings were shown to Jean-Léon Gérôme, and in 1869, Gérôme encouraged Courtais to enter the École nationale supérieure des Beaux-Arts in Paris. Through his life, Courtois was in close friendship with fellow student Pascal Dagnan-Bouveret, together with whom he maintained a fashionable studio in Neuilly-sur-Seine from the 1880s.
His paintings can be seen in the art galleries of Besançon, Marseille, Bordeaux, and Luxembourg. He was a Chevalier of the Legion of Honor. Among his students were Willard Dryden Paddock, Mary Rose Hill Burton, and Sara Page (1855–1943).
- "Underpaintings: January 2009". Underpaintings.blogspot.com. 2009-01-17. Retrieved 2010-08-23.
- T. F. Simon. "Académie Colarossi in Paris". Tfsimon.com. Retrieved 2010-08-23.
- Eleanor Tufts; National Museum of Women in the Arts (U.S.); International Exhibitions Foundation (1987). American women artists, 1830–1930. International Exhibitions Foundation for the National Museum of Women in the Arts. ISBN 978-0-940979-01-7.
- Catherine Renoir. "Georges d'Espagnat - Renoir Fine Art". Renoirinc.com. Retrieved 2010-08-23.
- Gabriel P. Weisberg. Against the Modern: Dagnan-Bouveret and the Transformation of the Academic Tradition. 2002.