Future 12th Chief Justice Harlan F. Stone #73 autographs a prepared Chambers Card dated April 15, 1931. (he did not become chief until 1941, 10 years after he executed this card.) Owen Roberts autographs a letter on January 8, 1943 (two years before his retirement) to j. F. T. O’Connor the same United States District Court Judge from Los Angeles, Ca. that communicated with Justice Frankfurter (that letter is on United States Supreme Court Letterhead.