This guide to evaluating services provided by Montana libraries is intended for the use of librarians, library boards, government officials, friends of libraries and other interested citizens. It will enable them to assess the adequacy of their present library services and help them move toward improvement of their library services in the future. The five areas of library services to be measured by these standards are: (1) structure and government of library service; (2) service; (3) materials: organization, selection, and control; (4) personnel and (5) physical facilities. Specific standards for each of these five areas are listed. The appendices contain: (1) Montana laws regarding public libraries, (2) library bill of rights, (3) the student and the library, (4) freedom to read statement and (5) standards documents. Members of the Montana Library Association Executive Boards for 1968-69 and 1969-70 and the Library Development Committee for 1968-69 are listed. (Author/NH)