In January 1980, a Task Force on Interlibrary Loan was appointed to work with Michigan State Library Services (SLS) staff to formulate a series of recommendations for an interim interlibrary loan structure which could evolve out of the existing system. What has evolved is a multi-type regional concept involving public, school, academic, and special libraries, backed up by the five major reference/research libraries (Detroit Public Library, Michigan State University, the State Library, the University of Michigan, and Wayne State University). This publication includes a description of the formation of the task force; a list of task force members; listings of criteria for regional cooperation and statewide interlibrary loans; suggested guidelines for the development of regional interloan services; a profile of the criteria for a multi-type region of cooperation; guidelines for inter-regional and inter-network relationships; directions for establishing a state-level Board of Review for resolving conflicts between and within regions; a list of criteria for 1980 Library Services and Construction Act (LSCA) Title III grants; a description of protocols for using the interlibrary loan services of the State Library; and a state map showing the 15 multi-type regions. (ESR)