Born in 1907, John Knox was educated at Oak Park [Illinois] High School, the University of Chicago (Ph. B. 1930), Northwestern University School of Law (J.D. 1934), and the Harvard Law School (LL.M. 1936). He served as law clerk and personal secretary to Justice James Clark McReynolds during the October 1936 term of the United States Supreme Court. Later, as an attorney in Illinois, Knox represented Allstate Insurance Company, the largest subsidiary of Sears, Roebuck and Company. Knox retired from the law in 1973. He was a member of the Bars of Illinois, New York, and of the Supreme Court of the United States. John Knox died in 1997.
[Sources: Brief biographical sketch of John Knox in the John Knox Papers: Box 20 Folder 29. Knox, John. "The Forgotten Memoir of John Knox: A Year in the Life of a Supreme Court Clerk in FDR's Washington." Edited and with a forward and afterword by Dennis J. Hutchinson and David J. Garrow. Chicago: University of Chicago Press, 2002. Bond, James E. "I Dissent: The Legacy of Chief Justice James Clark McReynolds." Fairfax, VA: George Mason University Press, 1992.]