National Association of Farm Broadcasters Archives, University of Illinois. NAFB Publications Series No. 8/3/89. Box No. 4. Contact http://www.library.uiuc.edu/ahx/ or Documentation Center, Historian's Records 27 : 48. East Lansing, MI : Michigan State University, Department of Television and Radio, 1970. Reprint of author's Ph. D. dissertation, including Summary, Chapter 3: a report of findings in terms of the survey items, and Chapter 5: Summary and Conclusion only