This report consists of six individual reports that were done by staff members at the Library Research Center as part of the overall project. In Part I, "Financing Public Library Expansion: Case Studies of Three Defeated Bond Issue Referendums," Ruth G. Lindahl and William S. Berner analyze defeated library bond issue referendums in Champaign, Quincy, and Peoria, Illinois. In Part II, "Suburban Communities and Public Library Service in the Chicago Metropolitan Statistical Area," Ruth G. Lindahl tests the proposition that certain types of suburban communities will have predictably higher levels of public library service than will others. For Part III, "Public Opinion in Illinois Regarding Public Library Support and Use" by Carol Kronus and James W. Grimm, field interviews were conducted with 2,031 respondents representing a probability sample of adult residents of Illinois. In Part IV, William S. Berner examines "Campaign Conduct and the Outcome of Library Bond Referendums." Barbara O. Slanker, in Part V, is concerned with "Administrative Structure of Public Library Systems and Its Relationship to Level of Service Offered by Member Libraries." In Part VI, Ralph Stenstrom presents an analysis of "Factors Associated with Membership and Non-Membership in Library Systems in Illinois." (Author/JB)