ALS in French, signed “L. Pasteur,” one page, 4.5 x 3.5, November 2, 1888. Letter to veterinarian Achille Maucuer, in part (translated): "Thank you for your kind and forgiving congratulations. I'd be surprised if the current red mullet vaccine gave mortality to your weakest white race. Do you want to try it on a dozen kids between 6 weeks and 3 months. I guarantee your losses, but I say to myself, and I would only do it for you." In fine condition. A nice letter with excellent content discussing his celebrated work on vaccinations.
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