This was at the time of the difficulties with tetraethyl lead when I was asked by Mr.

We ore hastening the Investigation on the effects of the diluted tetraethyl lead as rapidly as possible and will give you an early report.

I may say, however, that I consider it very unlikely that you have suffered any injury of a permanent sort as the result of any exposure to gasoline containing tetraethyl lead.

Kahoe College of Medicine University of Cincinnati Cincinnati, Ohio Dear Doctor Kahoe: On March 12, 1929, you furnished us * very comprehensive and sympathetic statement of your study of the case of who since about June, 1924, has berxWHHSnfflj^^^^^Wl and psychic consequence of tetraethyl lead poisoning at that ti~o.

., relative case, I looked up the matter of Dr, Dorris and Dr, er, remembering too lato to coint out to you h Ino 3 had been medical examiner in Cow York City- for some years and that he had done some of the autopsy and subsequent Investigations in connection with"tho Bayway poisoning, I have no knowledgeo ^ h m ^ D r , Dorris and Oattlor obtained information about the f f l H | | c a s @ , However, ny best guess is that something in th^sTtuatlon load them to believe that this case was similar to tho Bayway poisoning and that they might find tetraethyl lead in the tissues as they did in certain of the Bayway cases, I have no reason to believe that either of those gentlemen is other than an able and honest investigator.

I may say, h o w ever, that I consider it very unlikely that yo u have suffered any injury of a permanent sort as the result of any exposure to gasoline containing tetraethyl lead.

December 8, 1933 Mr, Philip Drinker Harvard School of Public Health 55 "^an ^yka street Boston- Mass, *' 'f Dear Mr, Drinker; I am sending yon herewith a rather lengthy article on the study of the Industrial and public health hazards related to gasoline containing tetraethyl lead.

Fron a hygienic point of view we would favor the use of smaller volumes of gasoline than are now used, since less air, saturated with tetraethyl lead vapor will be displaced (present quantity about 9 cubic feet).

. , sollne containing Tetraethyl Lead is handled, and i N ^ h e r thayjiwrosene should be available to wash the hands in case any spilj.age^ecu^y' Again employees have been given instructions to wash carefully witlaTJdap and water before eating food or smoking.

Dear Henry: Your letter of August 23 concerning the agreement of the Surgeon General with the manufacturers of tetraethyl lead came during my vacation and, therefore, it did not receive the prompt response which it deserved in view of its timeliness.

We shall be pleased to report our observations on the skin absorption of tetraethyl lead added to the "Vitol" mixture when the results are available.

Sinoe th abore haarlnga, a uumber of confrences hare been held between reprsentatives of th ohemieal aianufacturar, th repaehere, ihtereeted solentista, and offieer of th Publio Mealih Serriee, for th purpose of dereloping agreemente thioh it i beliered vili eatiafaoterily prtant th publie Thi e followed a procedure imilar to that e&ployed In other agreemente, euoh aa that between th Publio Health Serriee and manufacturera of tetraethyl lead, and th agreement vlth th manufacturera of methanel Ceaplying vlth your quest, I am enoloelng a oopy of th agreement, together vlth copies of th labels agreed upon* i i Vi RRS:LA 1& T " --, tory truly yours, H.S#Ouamlng Surgeon General

Obviously, you cculd get the handlers of gasoline to testify that they have no knowledge of any such thing as any special toxicity imparted to gasoline through the addition cf this small quantity of tetraethyl lead.

The composition of the present ETHYL Fluid containing ,75 theories of bromine is as follows on a weight percentage basis:- Tetraethyl Lead * Ethylene Dibromide Ethylene Dichloride Kerosene and impurities Dye 61,69 26.88 7.55 3.76 .12 The specific gravity at 20 C. is 1.6475.

I am of the opinion that your warning sign as submitted for use on tanks WARNING Contains Tetraethyl Lead Contents poisonous.