This collection is a sub-subgroup under the Montana Department of Transportations records, RS 492. The Materials Bureau operates under the DOT Engineering Division. To see the other Department of Transportation records, visit the primary finding aid, RS 492.

These records of the Department of Highways Maintenance Division consist of Subject Files (1927-1991) and Correspondence. Correspondence includes general correspondence of the Governor (1978-1985), and of the Maintenance Division Administrator and Engineer (1970-1985). Also included are files regarding the district and area offices (1953-1991), including: correspondence; "complaint" files; flood files; historical markers files; signing and landmark files; and miscellaneous report and project files, including Kootenai Hydroelectric Facility Project and aerial photographs of Seeley-Swan Highway.