Karl H. Hinke, 84, a longtime banking executive who created the MasterCard credit card, died Saturday in East Aurora, N.Y. Mr. Hinke was former chairman of the Interbank Card Association and a retired executive of Marine Midland Bank, where he worked for 55 years. MasterCard, originally called Master Charge, was started by Buffalo-based Marine Midland in 1966 at the urging of Mr. Hinke, who was then executive vice president of the bank. The trial credit card operation was started in Binghamton and spread to Jamestown,Syracuse, Rochester and Buffalo. It then attracted major city banks, including Chase Manhattan, Mellon Bank and the Bank of Detroit, which formed )) the Interbank Card Association in 1966. By the end of 1967, there were 150 members.
Helen Sachs Straus, 95, a trustee of Teachers College of Columbia University for 44 years and an executive at her family's radio station, died in her sleep Sunday at her home in New Canaan, Conn. Mrs. Straus, born in Elberon, N.J., was the daughter of Bernard Sachs, the neurologist who was a co-discoverer of Tay-Sachs disease. She studied at the Baldwin School in Bryn Mawr, Pa., and the Ecole des Arts in Montreux, Switzerland. In 1915 she married Nathan Straus Jr. In 1943 Straus bought WMCA radio in New York City and became its president. Mrs. Straus became vice president of the station in 1948. She also was director of public affairs and education and children's programming. From 1939 to 1942, Mrs. Straus was a member of the New York City Board of Higher Education. She was active throughout her life promoting education and child welfare. She was on the board of Teachers College from 1938 to 1982.