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THE JEFFERSON MEDICAL COLLEGE OE PHILADELPHIA 1025 WALNUT STREET TMENT OF PREVENTIVE MEDICINE March 18, 190 Robert A. Kehoe, M.D. Department of Environmental Health College of Medicine University of Cincinnati Cincinnati, Ohio k^219 Dear Dr. Kehoe: I am -writing for one of our residents, Dr. Routs, in Preventive Medicine who is presenting an assignment en titled, "The Case For Lead Being a Significant Air Pollution Hazard. Would you he kind enough to send him some of your reprints or papers regarding this subject. His assignment, is due April T6, and would appreciate receiving them before this date. Thank you for your cooperation. Sincerely ? Mrs. Theron Bull, Jr. Dept, of Preventive Medicine ob Kf 0019951