L.A.S. to a "Monsieur". 1 p. in-12 (central fold, traces of mounting on verso). - Concerns the public subscription launched in 1886 to finance the creation of the Institut Pasteur, which was inaugurated in 1888. He adds: "You will not believe how pleased I am with the last paragraph of your letter, although I pay no attention to this vile insulter", undoubtedly one of the (many) "antivaxers" of the time. - Joint: Péan, Dr [Jules-Émile] - Carte de visite with aut. s. note to Mme Marguerie. [Paris], 17-06-[18]90. ± 6 x 10 cm. Famous French surgeon, inventor of the haemostatic forceps which bear his name. Although a pioneer of hygienic medicine, he opposed Pasteur's discoveries.