THE AMERICAN UNIVERSITY WASHINGTON, D. C. 20016 SCHOOL OF GOVERNMENT AND PUBLIC ADMINISTRATION July 23, 1970 Francis R. Langevin, N.S. Bactericlogist Department of Health Chicopee, “Massachusetts Dear Mr. Langevin: In response to your request for citations on possible mutagenic effects of chlorine, my best source is a column by Joshua Lederberg, about five months ago discussing this problem, In addition, I be- lieve that Gene Marine in his book Rape of America as well as past issues of Environment also mention this possibility. I am a political scientist and therefore think that you may be best able to get first-hand research citations by writing directly to Dr. Lederberg - I believe he is at Stanford, * 4 Sincerely, f° a Ui & sever| Assistant Professor I think you may have overreached what I said; but may I have a copy of your article; and a page reference to Marine? Thank you Le : wor Prof. Joshua Lederberg Department of Genetics School of Medicine Stanford University Stanford, California 94305