UNITED STATES ARMY CHEMICAL CORPS BIOLOGICAL LABORATORIES FORT DETRICK, MARYLAND CMLRD-BL-1O-PD 1 July 1960 Dr. Joshua Lederberg Genetics Department Stanford University Medical Center Palo Alto, California Dear Joshua: As promised, here is a copy of the report of NAS-NRC ad-hoc committee which helped us on the BW wWarnine device problem. Also enclosed is a statement of the problem as given to them, which they were asked to consider. The problem differs from yours, but there may be points of interest in common. No particular considera- tion was given to items more-or-less along in development, such as the Partichrome, rather than to brief the group on their status, since our hope was for new and novel approaches to the problem. Sincerely, 1 Incl CHARLES R. PHILLIPS Rpt of Mte of NRC Committee Chief, Physical Defense Division Advisory to USA Cml C (1 cy) ce: Mr. G. A. Derbyshire w/] cy of Incl (as stated above)