Complex sentence: H.A. Mumaw, a practicing physician, first led the small operation; in 1894, a group of 15 "Old" Mennonite ministers and laymen started a corporation that they named the Elkhart Institute association.
Split into simpler sentences: H.A. Mumaw, a practicing physician, first led the small operation. In 1894, a group of 15 "Old" Mennonite ministers and laymen started a corporation that they named the Elkhart Institute association.