April 20, 1894 – Dr. Lloyd A. Hall, pioneering food chemist, born. April 21, 1966 – Pvt. Milton L. Olive, III, awarded the Medal of Honor posthumously for valor in Vietnam. April 22, 1922 – Jazz bassist and composer Charles Mingus born. April 23, 1895 – Clatonia Joaquin Dorticus patents photographic print wash. April 24,... [Read More]