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Ivan Dixon, an actor, director and producer best known for his role as Kinchloe in the television series "Hogan's Heroes," died Sunday at age 76 in a Charlotte, N.C., hospital after suffering a hemorrhage and complications from kidney failure. Dixon began his acting career on Broadway in plays that included "The Cave Dwellers" and "A Raisin in the Sun." On film, he appeared in "Something of Value," "A Patch of Blue," "Nothing But a Man" and the cult favorite "Car Wash." But he was probably best known for the role of Staff Sgt. James Kinchloe on "Hogan's Heroes," a satire set in a German prisoner-of-war camp during World War II.

Morris Mendelson, a University of Pennsylvania professor who helped develop a plan to computerize the New York Stock Exchange, died of cancer in Philadelphia on Sunday. He was 85. Mendelson and two colleagues formalized a plan in which computer transactions could replace shouting traders and mountains of paper records. Mendelson -- along with securities consultant Junius Peake and computer finance whiz R.T. Williams -- presented the plan to the Securities and Exchange Commission in 1975. Their idea took root in the 1980s.

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