Official approval of the MS has been recorded on p.107 in a note reading: ‘Lu et aprouvé les changemens. A Paris le 8 juin 1779. Suard. Vue l’aprobation, Permis de representer et d’imprimer ce 9 juin 1779. Lenoir.’

The MS was composed, according to a notes in Voltaire’s hand on f.79v, f.81r, f.95v, and f.98r, between 6 November 1759 and 12 February 1760. The notes states that the MS was composed at Les Délices. F.1-80 are written primarily in Wagnière’s hand with corrections by Voltaire. F.81-99 are written primarily in Voltaire’s hand. The first half seems to be a clean copy of the text. The second half appears to be a working document.

The letter begins with a poem known as ‘À monsieur le maréchal duc de Richelieu’. The verse is in Collini’s hand. The prose and date line are in Voltaire’s hand.