Vaccination / by Mr. John Pitcairn ; an address delivered before the Committee on Public Health and Sanitation of the General Assembly of Pennsylvania, at Harrisburg, March 5, 1907.

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Vaccination / by Mr. John Pitcairn ; an address delivered before the Committee on Public Health and Sanitation of the General Assembly of Pennsylvania, at Harrisburg, March 5, 1907. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.