Edition and translation of about 60 letters mostly between Pasteur and his protegé Louis Thuillier in the Reynolds Historical Library at the University of Alabama. During the period involved in this correspondence "Thuillier conducted a series of vaccinations against anthrax in sheep and cattle in Germany and Austria-Hungary. It is believed that Pasteur intended to conduct the vaccinations himself, but was constrained by other responsibilities from doing the job in person. Relying on Thuillier as a surrogate prompted a steady stream of letters between protégé and mentor, detailing the successes, failures and obstacles faced in the project. Tragically, the relationship between Pasteur and Thuillier ended just over a month after the completion of the vaccination tests in Germany. As that project ended, Pasteur sent Thuillier with three other scientists to study a cholera epidemic in Egypt. Thuillier became ill, most likely from cholera and died on September 18, 1883 at age 27."