The Forgotten Frontier (1931) is a documentary film about the Frontier Nursing Service, nurses on horseback, who traveled the back roads of the Appalachian Mountains of the eastern United States. It was Directed By Mary Marvin Breckinridge, and featured her cousin, Mary Breckinridge, who was a nurse-midwife and founded the Frontier Nursing Service... Read more at: http://en.wikipedia.org/wiki/The_Forgotten_Frontier