Over time, the Regional Library Systems Act has succeeded in its aim to widen and improve access to library services for all Maine residents. Today, students in the smallest high schools and users of the most remote public libraries can plug into the resources of the largest public libraries in the state and draw on the services of their professional staffs. The Act was enacted in 1973 after a long process that began in the 1950s. Background to the development of the Regional Library Systems Act is given, and developments in interlibrary loan since the Act passed the Legislature in June 1973 are outlined. The Regional Library Systems Act has worked remarkably well. Concerns about the loss of local autonomy have been put to rest; users of local libraries and school libraries have improved access to library services when their librarians can tie into the collections of the Area Reference and Resource Centers; and local library staffs are better prepared through the support offered by the District Consultants. Unfinished business remains; a statewide borrower's card has yet to be issued, and many libraries still do not tie into the system. (AEF)