Dr. Leila Denmark was a pediatrician in Atlanta who started treating children (or "little angels," as she called them) in 1928...and didn't stop for 73 years.
She also helped develop a vaccine for whooping cough, popularized "mush," wrote numerous books, and was the fourth-oldest person in the world when she died.
Thank you to our lovely listener, Carrie, for bringing Dr. Denmark to our attention! Do you have a Cool Dead Woman to share?