Document wr1E76KNpxY2VZXvkMGvzqB7B

July 25, 1959 AIR MAIL L. E. Curtls, M*D. Standard pii Company of California 225 Bush Street San Francisco 20, California Dear Doctor Curtiss Herewith is the last of the analytical results on the Yellow Cab men during Phase III, or if not the last, it is so nearly so as to leave nothing of importance to be added. On the basis of the findings during Phase I and Phase III, I have set down the average results side by side for each man and for the group. This answers the question as to the severity of the added exposure during Phase III in a definite manner. Cordially. Robert A . Kehoe, M . D . R M : ss Enel. K r 0004901