Samuel R. Haythorn

Samuel Reese Haythorn


Born: 10 September 1880, Danville, Illinois

Died: 6 December 1949

Academic Degrees

  • MD: University of Michigan, Ann Arbor, Michigan, 1904

Academic Positions

  • 1904 - 1906 Assistant in Pathology
  • Assistant in Gynecology, University of Michigan
  • 1906 - 1908 Pathologist, Massachusetts State Hospital
  • 1909 - 1910 Assistant in Pathology, Harvard Medical School (under F.B. Mallory)
  • 1910 - 1911 Instructor in Pathology, University of Pittsburgh
  • 1911 - 1913 Assistant Professor of Pathology, University of Pittsburgh
  • 1915 - 1921 Director of The William H. Singer Memorial Research Laboratory (succeeded by E.W. Goodpasture)
  • 1921 - 1926 Professor and Head of Pathology and Bacteriology, University of Pittsburgh
  • 1921 - 1933 Assistant Professor of Preventative Medicine, University of Pittsburgh
  • 1926 - 1949 Pathologist and Director, Allegheny General Hospital, Pittsburgh, Pennsylvania


  • University of Michigan (with A.S. Warthin)
  • Boston City Hospital; Harvard (with W.T. Councilman and F.B. Mallory)
  • University of Pittsburgh (with Oskar Klotz)
  • University of Leipzig (with Felix Marchand)

Selected Career Highlights

  • Best known for his histological studies of the effects of smoke and its accompanying industrial air pollutants on the human lung (Pittsburgh at the time was a highly industrialized city, with a smoke problem not surpassed in any other American city). These investigations led to important papers on the pneumonoconioses, anthracosis and silicosis.

  • Author of 60 articles to various journals on many different medical topics.

  • Studied tuberculosis, experimental trinitrotoluene poisoning, various tumors, staining and storage methods for specimens, septicemia, syphilis, preventive methods, autopsy techniques, hospital laboratories, frozen sections for the diagnosis of malignancy, fungal infections, aortic diseases, and later in life, foreign body granulomas, additional neoplastic diseases, and femoral osteochrondosis.

  • President of the American Association of Pathologists and Bacteriologists, and the American Society for Experimental Pathology.

  • Hobbies included an interest in amateur plays and music, some of which resulted in productions that were performed at various medical gatherings.


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