Mr. Heth returned to INA in 1960 and was elected assistant secretary the following year. He then ascended steadily through a series of executive posts that took him to the chief executive's office in 1981.
INA merged with Connecticut General Corp. of Bloomfield, Conn., in 1982 to become Cigna. Mr. Heth retired in 1983.
Over the course of his career, Mr. Heth served as vice chairman of the Insurance Federation of Pennsylvania and was an executive committee member of the Pennsylvania Economy League's Eastern Division. He also served on numerous insurance company boards.
Mr. Heth was born in Partridge, Ill., and lived in several communities as his family moved. He attended Radnor High School for a year and a half, and graduated from a high school near Pittsburgh. He attended Duke University in Durham, N.C., until the outbreak of World War II, when he served in the Army.
Mr. Heth was a member of Aronomink Golf Club in Newtown Square.
He is survived by his wife, Molly McNutt Heth; sons Donald G., Timothy D. and Steven G.; daughter Mollie C. Lanin; two sisters; a brother; and five grandchildren.
A funeral service will be held at 11 a.m. tomorrow at Wayne Presbyterian Church, 125 E. Lancaster Ave. Burial will be private.
The family suggests contributions to Wayne Presbyterian Church, 125 E. Lancaster Ave., Wayne, Pa. 19087.