 However, the introduction of co-education resulted in three of the new ones becoming Lehigh's first female residences in 1971 and the remaining three becoming non-selective men's residences.These adjoining buildings used to be the William H Chandler Chemistry Building (1883) and the Harry M. Ullmann Chemistry Laboratory (1938).William Chandler was appointed as professor of chemistry in 1871 and retired in 1905; during this time he guided the department and gained a national reputation for his work.