Jack was born in Rochester, N.Y., and came to Princeton after attending Phillips Exeter Academy. He became a member of Cottage Club and majored in English. His thesis was “Naturalism in American Drama.” 

After graduation Jack served as an artillery officer in Germany, where he met the general’s daughter and married her in the American Cathedral in Paris. Returning to the United States, Jack went to work for IBM but left after six years to create the Middleton Card Co., manufacturing punch cards that were an early version of computer software. In 1971 he joined Discount Corp., a primary dealer in U.S. Government obligations, and retired as vice president in 1991. 

He was a member of the Seabright Lawn Tennis and Cricket Club, the All Saints’ Memorial Church National Landmark Trust, and the All Saints’ Vestry. 

Jack was predeceased by his wife of 62 years, Nancy. He is survived by one son, two daughters, and three grandchildren.