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History of the Telegraph Difficulties and Success of an Inventor - p19
doi:10.1038/scientificamerican09291855-19a
The Plague; Its Origin and Disappearance - p21
doi:10.1038/scientificamerican09291855-21b
American Association for the Advancement of Science.—No. 5 - p22
doi:10.1038/scientificamerican09291855-22