Mark E. Connelly ’51 ScM, of Concord, Mass.

Mark E. Connelly ’51 ScM, of Concord, Mass.; Oct. 15. He had a long career as a researcher at MIT and worked on hybrid computing, air defense, aircraft simulation, air traffic control, and mass transit. He advised numerous graduate students on their research. He was an active member of the Concord Sailfishing Group and played tennis, cribbage, and bridge. He also enjoyed reading the New York Times, the Boston Globe, and books on economics, history, and political science. He was a veteran of the U.S. Marine Corps and is survived by two daughters, a son, two daughters-in-law, two sons-in-law, 12 grandchildren, and four great-grandchildren.