Document GmNLxr7jn6nyzneQ9d5NZQwem

c o P Y ETHYL GASOLINE CORPORATION NEW YORK CITY August 21, 1934 Dr. R. R. Sayers TJ. S . P u b lio H ealth Se r v ic e W ash ington D. C. ' My d e ar Dr. Sa y e r st In accor d an ce w ith Dr. Cumming* l e t t e r , we h ave r evised our av iation con tract to in se r t in th e appropriate place the follow in g clau se "Eu yer may m ix up t o b u t n ot exceed in g fo u r (4 ) cu b ic cen t im et er s o f t e t r a e t h y l le a d p e r U. S. Gallon o f gaso lin e t o produce ga so lin e o f 87 octan e number or above1' I do n ot know t h a t you h ave a copy o f ou r a v ia t io n co n t r a c t in your f i l e s and f o r t h a t r e aso n , I am sen d in g you one of our p r in t e d co n t r act s and I h ave marked a few c lau se s in which you m y be in t e r e st e d . Very t r u ly you rs. ge/ l r J En c. Graham Edgar . KE 0009333