After three years serving on the USS Norris, an antisubmarine destroyer, Earle joined the research and development division of Procter & Gamble, where he did research on personal-care products in Cincinnati for 29 years. He then did regulatory work for P&G Pharmaceuticals in Norwich, N.Y., until he moved to Ipswich, Mass., upon retirement in 1994. During his career he did postgraduate work at Cornell, Michigan, and Cincinnati.
Earle died Aug. 14, 2019. He is survived by his wife, Virginia, and and three children.