Leona Baumgartner as the cornerstone to the creation of a healthy community, beginning with her work as district health officer in planning classes and clinics. Baumgartner was also an early advocate of the vaccine developed by Jonas Salk as a method of immunization against polio and the fluoridation of water as a bulwark against dental disease. Baumgartner was elected a Fellow of the American Academy of Arts and Sciences in 1969. She was awarded the Public Welfare Medal from the National Academy of Sciences in 1977. Her other awards include the Sedgwick Medal, the Albert Lasker Public Service Award, the Elizabeth Blackwell
Jonas Salk the University of Michigan. Francis had recently joined the faculty of the medical school after working for the Rockefeller Foundation, where he had discovered the type B influenza virus. According to Bookchin, "the two-month stint in Francis's lab was Salk's first introduction to the world of virology—and he was hooked." After graduating from medical school, Salk began his residency at New York's prestigious Mount Sinai Hospital, where he again worked in Francis's laboratory. In 1947, Salk became ambitious for his own lab and was granted one at the University of Pittsburgh School of Medicine, but the lab was smaller than