The materials selection policy of the public services division of the Maine State Library analyzes the statutory language under which the library operates, and incorporates the requirements of that language into a broader framework of demand, collection quality, and long term value. Collection development is discussed by Dewey class, followed by paragraphs on the Maine Author Collection, vertical files, maps, audiocassettes, periodicals, and state and federal documents. A gift policy is outlined, and the policy concludes with a statement on challenged materials, the texts of "Library Bill of Rights" (1980) and "Challenged Materials: An Interpretation of the Library Bill of Rights" (1981), and the Maine State Library form entitled "Citizen's Request for Reconsideration of a Book" (1982). (Author/THC)