The letter is from E.S. Rabeau, M.D., Assistant Surgeon General, Chief of the Division of Indian Health, to Senator Harris regarding the Indian health program in Oklahoma. The letter addresses the challenges faced by two-year physicians and the efforts made to improve attitudes and provide training in public health programs. It also mentions a public health residency program initiated in collaboration with the University of Oklahoma and the Oklahoma State Department of Health. The letter emphasizes the importance of the Indian people in the overall health program and the need for cooperation and good faith in providing healthcare services.