Sigard Adolphus Knopf, German-American Physician

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Knopf with his head against back of patient, listening for heart sounds. Sigard Adolphus Knopf (1857-1940) was a physician specializing in tuberculosis and medical writer who wrote, A History of the National Tuberculosis Association. He was also a member of Margaret Sanger's American Birth Control League and Professor of Phthisiotherapy at the New York Post-Graduate Medical School and Hospital.

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Size: 3000px × 3610px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No

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