ORAL HISTORY OF DR. HENRY I. KOHN On September 13, 1994, Ms. Anna Berge of the Lawrence Berkeley Laboratory Archives and Records Office interviewed Dr. Kohn at his residence in Berkeley, California. Dr. Henry I. Kohn was selected for the oral history project because of the positions he held at Oak Ridge National Laboratory, University of California, San Francisco (UCSF), and Harvard Medical School. This oral interview covers Dr. Kohn’s career as a radiologist; he also offers his perspective on the people he worked with and the era he worked in. Short Biography: Henry Irving Kohn was born in New York City on August 19, 1909. He was married in 1961; they have two children. He received his A.B. from Dartmouth in 1930 and his Ph.D. in physiology from Harvard in 1935. From 1935 to 1937, Dr. Kohn was a Traveling Fellow, General Education Board in both Stockholm, Sweden and Cambridge, England. From 1937 to 1943, he was an instructor-assistant professor of physiology and pharmacology at Duke University in North Carolina. In 1943, he entered Harvard Medical School and received his M.D. in 1946. He served as a commissioned officer in United States Public Health Service (USPHS); from 1947 to 1953, he was stationed at Baltimore, Maryland, Oak Ridge National Laboratory in Tennessee, and UCSF. He remained at UCSF for ten years and joined the Research Laboratory as a clinical professor of experimental radiology and research radiologist. He left UCSF in 1963 to take the position of Fuller-American Professor of Radiology at Harvard Medical School, and from 1968 to 1976, he was the Gaiser Professor of Radiation Biology. Since 1976, he has been a professor emeritus. During his career, Dr. Kohn has held the following positions: * From 1957 to 1960: Scientific Secretary, Advisory * From 1964 to 1979: Director of the Shields Warren Radiation Laboratory at New England Deaconess Hospital. * From 1965 to 1969: Memberof a radiation study section for the National Institutes of Health. Committee on Biology and Medicine for the Atomic Energy Commission.