Document 2qmgy32k82vZqg21enM8qJ4d5

June 27* 1933 Willson Products Company, Inc. Reading Pennsylvania Gentlemens Wo have had several requests for approval of your chemical cartridge respirator and fume and smoke mask for use in working in atmosphere contain ing lead tetraothyl* In looking over your folder describing these masks, we find no reference to the types of cartridges available or to the cartridge which you recommend for use in organic vapors. If you will forward us one of your respirators and smoke masks with cartridges for organic vapors^for lead tetraethyl, we will be pleased to examine them and answer the inquiries that now are pending. Very truly yours, VTFMjlS Willard F. Machle, M.D. Medical Department Ethyl Gasoline Corporation kEr 0022481 i N22540