Sainte-Beuve's "What is a Classic" essay was originally published in Le Constitutionnel on October 21, 1850, as "Qu'est-ce qu'un classique?—Lundis" ("Monday"), Volume III, 40. (Stephen Moeller-Sally, "Gogol's afterlife: the evolution of a classic in Imperial and Soviet Russia" [Evanston, Illinois: Northwestern University Press, 2002], p. 168). However it originated, an error regarding the date of Saint-Beauve's "What Is a Classic?" has crept into some sources. According to historical calendars, <http://arc.id.au/Calendar.html>, Monday, October 21 had to be the in 1850, not 1860. The year is erroneously stated as 1860 in A. Pichon's edition of Saint Beuve's work in "Causeries Du Lundi Et Portraits Littraires" (republished in 2009 in its entirety by BiblioBazaar/BiblioLife, LLC).
Casement, William. "College Great Books Programs". The Association for Core Texts and Courses (ACTC). Archived from the original on 16 November 2012. Retrieved 29 May 2012.
Brooke, Allen (Spring 2000), "Review: Calvino: Old Wine in a New Bottle", The Hudson Review, 53 (1), The Hudson Review, Inc.: 161–166, doi:10.2307/3853113, JSTOR3853113
Brooke, Allen (Spring 2000), "Review: Calvino: Old Wine in a New Bottle", The Hudson Review, 53 (1), The Hudson Review, Inc.: 161–166, doi:10.2307/3853113, JSTOR3853113
Casement, William. "College Great Books Programs". The Association for Core Texts and Courses (ACTC). Archived from the original on 16 November 2012. Retrieved 29 May 2012.