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Letter from John J. Phelan, Jr., New York Stock Exchange to SEC Chairman Harold Williams on NASD request for linkage between its Computer Assisted Execution System (CAES) and Intermarket Trading System (ITS)

Date: January 20, 1981
Attribution: Courtesy of the National Archives and Records Administration
Letter from John J. Phelan, Jr., New York Stock Exchange to SEC Chairman Harold Williams on NASD request for linkage between its Computer Assisted Execution System (CAES) and Intermarket Trading System (ITS)