This collection is a sub-subgroup (Bureau) of the Montana Department of Transportation records, RS 492. The Highway Planning Survey, which became the Planning and Research Bureau following the Executive Reorganization of 1971, formerly operated under the Engineering Division. Please see the primary finding aid for more Montana Department of Transportation records.

These records consist of general correspondence (1935-1963) arranged alphabetically by subject; printed material (1938-1939); subject files (1936-1945), arranged alphabetically; and miscellany. Maps and printed material have been transferred to the Library Map Collection and Library respectivelly.