Document gDGEOvxD2X1LeRxVM4ow20jdL

H A R O L D R. B O H L M A N , M. D. 214- 17 MEDICAL ARTS BUILD ING CATHEDRAL ST REET AT READ Ba l t imo r e,Ma r yl a nd March 23, 1933 Dr . Robert A. &ehoe University of Cincinnati College of Medicine Cincinnati, Ohio Dear Doctor Kehoe: Many thanks for your kind favor of February 28, regarding exhaust gas of tetra-ethyl lead. x amgreatly interested in your ex perimental work with the group of men at Wright Field with leaded fuel, especially greater concentration in the gasoline. If you can find the opportunity, and care to do so, I would be greatly pleased to have an estimate of results, or your work to date, in this line - especially the hours flown per pilot, frequency, type of type, the type of exhaust pipe, et cetera. regards, 1 am With many thanks and kindest personal Very sincerely yours, N HHBjP KB 0 0 2 0 1 1 2