Edwin O. (Edwin Oakes) Jordan

Born in Thomaston, Maine, on July 28, 1866, Edwin Oakes Jordan became one of the early American leaders in bacteriology. He studied at the Massachusetts Institute of Technology and later built a long academic career at the University of Chicago, where he taught and helped shape the field for a generation of students.

Jordan was known for research and writing that made bacteriology useful beyond the laboratory. He studied the spread of infectious disease and wrote influential books and articles on sanitation, water supplies, milk safety, and the role of bacteria in human health. His work came at a time when cities and universities were rapidly adopting scientific approaches to public health.

Because he worked during the formative years of modern microbiology, Jordan stands out as both a researcher and a teacher. He helped translate a fast-growing science into practical knowledge that mattered to physicians, public officials, and ordinary communities, and his books remained widely used for years.