IAMM President 1954-1955
Harold Stewart was born 6 August 1899 in Houtzdale, Pennsylvania and died 30 May 1998 in Bethesda, Maryland.
He received an undergraduate degree from the University of Pennsylvania and Dickinson College and his MD from Jefferson Medical School, Philadelphia, Pennsylvania in 1926.
In 1918 he joined the US Marine Corps and retired with the rank of Lt. Colonel in 1926.
From1937-1939 he was a Pathologist in the Public Health Service, Office of Cancer Investigations (the predecessor of the National Cancer Institute), Harvard Medical School. and from 1939-1969 was Chief of Pathology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland. During this time he assembled and classified over 300,000 slides that included nearly every significant neoplasm created experimentally in the laboratory. This became the Registry of Experimental Cancers at the NIH.
He was instrumental in the foundation of the American Society of Clinical Pathologists. He was advisor/consultant to the WHO, AFIP and the Uniformed Services University of the Health Sciences. He was partly responsible for the developments that led to the Atlases of Tumor Pathology (AFIP Fascicles).