Establishment for the study of vocal physiology : for the correction of stammering, and other defects of utterance; and for practical instruction in "visible speech." / Conducted by Alexr. Graham Bell.

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Establishment for the study of vocal physiology : for the correction of stammering, and other defects of utterance; and for practical instruction in "visible speech." / Conducted by Alexr. Graham Bell. 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.