However, in a letter dated 5 September 1858 to Benjamin Valz, Laurent wrote that his first name is Joseph-Jean-Pierre (see image), and the Minor Planet Center now uses "J. J. P. Laurent". When using only an initial rather than his full first name, he sometimes used "J. Laurent". A small set of astronomical charts known to have been drawn up by Laurent himself, as well as a hand-drawn star chart portraying the discovery of 51 Nemausa, show his name as J. Laurent (see images). Philippe Véron in his unpublished "Dictionnaire des astronomes français" gives his name as "Joseph Laurent"  In 1857, it was reported that Valz had undertaken the publication of equinoxial charts, to be drawn up by Laurent. When Valz reported the discovery of Nemausa in a letter to the "Comptes rendus hebdomadaires des séances de l'Académie des Sciences", he cited this as the "first success" of these equinoxial charts. The equinoxial charts in question indicate the author as "J. Laurent" "(see image)" and this is also indicated in a library catalog. A notation (see image) at the top of a hand-drawn star chart in the Observatoire de Marseille - Patrimoines archives notes the discovery of the asteroid as follows: "Némausa (51) dec. [ = découverte ] à Nîmes par J. Laurent (22 janvier 1858)", which means "51 Nemausa disc. [ = discovered ] at Nîmes by J. Laurent (22 January 1858)". André-Adolphe-Eugène Disdéri pioneered the "carte de visite", an early form of mass-production portraiture photography. According to his biographer Elizabeth Anne McCauley, Disdéri developed this process during his stay in Nîmes in 1853, and then moved back to Paris to make his fortune. She cites Disdéri's own book which thanks a chemist and assay office inspector in Nîmes named Monsieur Laurent for his assistance with the chemistry. In her book McCauley identifies the full name of this Monsieur Laurent as Joseph Jean Pierre Laurent, citing an 1855 passport application. The coincidence of name, profession, city and time period is suggestive, however a definitive link to the discoverer of the asteroid has not been established.