Records include correspondence, primarily with sign companies and individual sign owners; case files for permitted and non-permitted signs statewide; case files for legal actions; reports, including appraisers' progress reports, a legislative report, statistical reports on minority contractors, and a feasibility assessment; subject files on highway beautification, Outdoor Advertising Control, and other topics; and miscellany, including sign inventories, Federal Highway Administration manuals, and other materials. The Montana Department of Transportation series also includes documents relating to the Adopt-A-Highway program, Missoula Logo Signs, OAC Basin Creek, and Yellowstone Park signage.