Found: Wilson Heller's papers

[hoosier]

UNIVERSITY OF ILLINOIS ARCHIVES HOLDINGS DATABASE
I don't think it was a secret, but Wilson Heller's papers and archive are at the Univ. of Illinois, and here is the listing from their web page.
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Record Group: Student Affairs
Sub-group: Programs and Services, Office of the Dean of Students
Wilson Heller Papers, 1937-1983
Record Series Number: 41/2/52
Volume: 13.2 cubic feet
Arrangement: Alphabetically within subject areas and chronologically thereunder



Description: Correspondence and Subject Files used in compiling annual comparisons and Fraternity Insider articles on fraternities and sororities. Includes notes, surveys, chapter ratings, magazine and newspaper clippings, copies of Pot-Pourri (1964-1965), and Fraternity Insider (1965-1983), and publications of the College Survey Bureau, Inc., and Fraternity Consultants, Inc. Subject includes chapter management, college Fraternities Secretaries Association (1969-1977), Fraternity Hall of Fame (1972-1983), Interfraternity Research Advisory Council (1955-1962), National Interfraternity Council (1949-1979), Phi Kappa Alpha alumni (1950-1980). Includes correspondence with John A. Buchroeder (primarily concerning Balfour Monopoly Case) (1959-1974), Edward Georgeff (1964-1982), Stewart Howe (1953-1964), Ralph W. Wilson (Director of College Fraternity Scholarship Processing) (1953-1961), and Don Young (1960-1967). Also includes photographs and award plaques.