Document 1B6DGMyYBqg7OXbyX0gxbygm

October 13* 1971 Dr. J. C. Celandrs Industrial Bio-Test Laboratories, Inc. 1810 Frontage Road Northbrook, Illinois 60062 Desr Dr. Calandra: This letter will serve 8B written confirmation of the verbal authorisation of some tine ago for your laboratory to proceed with dominant lethal studies in mice on Aroclors 12^2, 125b and 1260. I understand that each of these studies will cost ,000.00 per compound. Very truly yours. Elmer P. Wheeler Mgr., Environmental Health EPW/bks cct Dr. M. L. Keplinger William B. Papsgeorge DSW 034775 STLCOPCB4018602