After serving in the Civil War, Dr. Clark (B.1843,D.1926) graduated from the University of Pennsylvania Medical School in 1867. In 1868 he moved to Springfield where he began a career in Obstetrics. In the 1870's, he served as Springfield's City Physician. In later years, he was one of the first chairs of the Board of Mangers of Wesson Maternity Hospital.
Perhaps Dr. Clark's single achievements was persuading Springfield citizens to install a comprehensive sewer system- a measures critical to the city's public health.