It is no easy task to identify the first edition of Mme de Graffigny's only novel. No manuscript is extant, and no presentation copies have come to light, which might bear indications in the author's handwriting. The novel was published during the visit of her lifelong friend from her native Lorraine, François Antoine Devaux, who stayed in Paris from 11 October 1747 to 11 March 1748. Their correspondence, normally a valuable source of information, was thus suspended during this crucial period. The information their letters provide before and after these dates is very sparse, but some of it is critical for our purposes.
McEachern, Jo-Ann and Smith, David
"Mme de Graffigny's Lettres d'une Péruvienne: Identifying the First Edition,"
1, Article 4.
Available at: http://digitalcommons.mcmaster.ca/ecf/vol9/iss1/4