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Donald Marron, PaineWebber Chief and Art Collector, Dies at Age 85

Donald B. Marron, who headed the securities firm PaineWebber Group for two decades and became almost as well known for his art collection as for his Wall Street exploits, died Friday in New York. Mr. Marron, 85 years old, apparently had a heart attack while on the way to a holiday party, his family said.

Mr. Marron, a college dropout who stood 6-foot-6 and started working on Wall Street in his late teens, co-founded the macroeconomic research firm Data Resources Inc. in the late 1960s with Otto Eckstein, a Harvard economist…