The manuscript is a lettre en vers in the hand of Pierre Robert Le Cornier de Cideville, featuring a prefatory poem of 30 lines. The author has recently arrived in Rouen and is enjoying the company of Formont. In urging Voltaire to share his latest works for review, he references a copy of Zaïre currently in his possession. P.S. D525 and the letter of 23 March 1763 appear to be the only letters from Cideville to Voltaire hitherto printed. The verse of MS1 exactly reproduces that of MS2, but the prose shows several differences.