Records of the Montana Department of Highways, Missoula District Office, consisting primarily of correspondence, both internal and inter-departmental, dealing with procedural, personnel, and project-related topics. There are also frequent communiqués from the Federal Highway Administration.

Records of the Montana Department of Highways Right of Way Bureau. This collection consists primarily of official deeds, documenting the transfer of land from private citizens to both the Department of Highways for highway projects, and several railway companies.