Andrew Taylor Still, MD, DO, founded the first school of osteopathy, the American School of Osteopathy (ASO), in 1892. Two graduates from the second class of the ASO, Elmer and Helen Barber, opened the "second school of osteopathy," the National School of Osteopathy (NSO), in 1895. The guiding principles of the NSO were vastly different than those of the ASO, and Still saw the Barbers as a thre...