The Cornelius W. Krusé Collection spans the last part of his tenure as a professor in the school of hygiene and public health, emphasizing his involvement with the World Health Organization (WHO). There are numerous records concerning Krusé's membership on the WHO Expert Committee on Environmental Management for Vector Control. Materials include lists of committee members, agendas, annotated schedules, programs of lectures, working papers, and background information. Additional materials relate to his work on the Johns Hopkins Hospital Sanitation Committee.