The diary is arranged according to interview and visit and documents Mary Tennant's talks with professionals in the field of public health. The focus of the International Health Division in which Mary Tennant is a staff member is disease prevention and investigation of diseases important to public health. Tennant travels to Europe and South America to survey public health programs, facilities and infrastructure. She attends various public health conferences and receives updates on Rockefeller Foundation nursing fellows. The diary includes, "Study on the Schools of Nursing in Latin America."