Pioneering French microbiologist and chemist (1822–1895) who demonstrated the germ theory of disease and developed the first vaccine against rabies. ALS in French, signed “L. Pasteur,” one page, 5.25 x 8.25, January 3, 1878. Letter to a colleague telling him that he did the commission of which was charged by him, all the works were shipped. He encloses a note of the expenses in order to be reimbursed. In fine condition, with bisecting mailing folds, with vertical fold through first initial of signature, and a light overall shade of toning. Pre-certified PSA/DNA and RRAuction COA.
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