The Versailles edition of the Works and Correspondence of François de Salignac de la Mothe-Fénelon (1651–1715), Archbishop of Cambrai, reproduced again with some modifications in the Paris edition, is the best edition available; but it is incomplete and imperfect in many respects. This is true especially of the correspondence with its cumbersome classification, its doubtful identifications, its discrepancies and deficiencies in chronology. Fortunately, in recent years numerous additional works and letters of Fénelon have been published in books and periodicals, and these, together with a number of corrections and revisions which have been made of the correspondence, have served to supplement and to rectify our knowledge of Fénelon and his activities. It is the purpose of this paper further to modify and to complement this knowledge: first, by correcting an error made by the editors of the editions mentioned above, in mistaking the identity of the person to whom one of Fénelon's letters is addressed; secondly, by revising the text of this same letter as it is published; thirdly, by reproducing for the first time a Mémoire written by Fénelon, which seems either to have been unknown to the editors, omitted through mistake, or deliberately suppressed by them as unimportant.