French microbiologist and chemist who demonstrated the germ theory of disease and developed techniques of inoculation, most notably the first vaccine against rabies. ANS in French, signed “L. Pasteur,” on the front of an 8 x 4.25 mailing envelope, no date. Brief note to a Mr. J. J. Rodrigues. In full, “Viendra prendre lui–meme aujourd’ hui ou demain cette lettre a l’ Ecole Normale.” In fine condition, with light overall toning to envelope and a few light bends. COA John Reznikoff/PSA/DNA and R&R COA.
