MacMillan Bloedel Research Limited Pulp & Paper Products Division 3350 East Broadway Vancouver 12, B.C. Telephone: 254-5151 Area Code: 604 April 2, 1970 Professor J. Lederberg, Head, Department of Genetics, Stanford University School of Medicine, Stanford, California 94304 U.S.A. Dear Josh: The continued pressure of Mary's health problem - enteritis of one kind or another, and the difficulties inherent in trying to find a job at long distance, compelled me to move here at Christmas. I've now taken up work on the enzymology of cellulose and lignin degradation (among other things), and am learning some mycology and engineering. As an experi- ence for a general microbiologist, it promises to be quite good. Thank you for your assistance and concern. I hope this move will be the last for many years. TIAZZyyY am Best regards, Beth W.E. Razzell, Ph.D. Research Associate. WER/zs