Document Y90EG5QNvjNRO9vo52j5QbJV

/X DAVID W. J OH NSON. M. D. S2 SREENR1DGE AVENUE WHITE PLAINS. N. Y. Robert A, Kehoe Laboratory of Applied Physiology University of Cincinnati Ohio M a r C l 9 1 9 3 3 Dear Sir: . 'w_ Your letter of March I, received. Thank you very much p^v* interesting information. I am enclosing the history in Mr. case as I think it is very interesting. I would appreciate ,, turning this to me when you have finished with it. Would you be kind enough to explain what you mean by a "cracked" gasoline. Very truly yours, (Signed) i/r