Document wDyo5YO5DxYbL8dypoMOxXdjV

. UNITED STATES DEPARTMENT OF THE INTERIOR FISH AND W ILD LIFE SERVICE BUREAU OF S P O R T FISH ERIES ANO W ILD L IF E BU ILD IN G 6. OENVER F E D E R A L C ENTER OENVER. COLORADO B Q 223 Janu ary 16, 1968 VRes Monsanto Chemical Company 800 N. Lindbergh Boulevard S t. Louis, Missouri . Gentlemen: I t has been brought to our attention that presumptive evidence of chlorinated biphenyl and chlorinated polyphenyl coupounds have been found in avian and animal tis s u e s . We are in the process o f further in vestigation of compounds o f th is se rie s and vould appreciate your sending us samples of your Arochlor compounds numbers 12^2, 125^> 1260, 1268 and any others which might be extensively used. * Sincerely yours, Richard A. WilsonJ--Sr. ` Research Chemist (Biochemistry) i;0 C 0 3 3 10 3390