Abstract
This work is divided into three parts, the first of which will examine the nineteenth century edition of the Oeuvres de Lagrange published in Paris from 1867 to 1892 in 14 volumes, edited by the mathematicians Alfred Serret, for Volumes I–X, XIII, and, after Serret’s death, by Gaston Darboux for Volumes XI and XII. Volumes XIII and XIV, containing the correspondence, were edited by the historian and librarian, Ludovic Lalanne. The second part concerns the question of the manuscripts and correspondence not contained in the Oeuvres, while the third part takes stock of some editions currently being published, and presents some possibilities for the collection of the complete works of Lagrange.