This collection is a subgroup (Predecessor Agency) of the Montana Department of Community Affairs records, RS 505. The Montana Department of Planning and Economic Development transferred to the Department of Intergovernmental Relations (later named Community Affairs) as a Division in 1971, following the Executive Reorganization. Please see the primary finding aid for more Montana Department of Community Affairs records.

These records consist of two groups; records of the Department of Planning and Economic Development and records of the Montana State Planning Board. The records of the Department of Planning and Economic Development consist of outgoing and general correspondence; minutes; press releases regarding Big Sky; reports, including the organizational structure of the department; speeches; subject files, including topics such s alcohol based fuel, anti ballistic missile areas, population statistics, economic and housing surveys, forest resources studies, medical facilities, mining, and industrial development in various cities and counties; a writing by Merrill Burlingame regarding the Gallatin Valley; miscellany; and clippings regarding Big Sky. The records of the Montana State Planning Board consist of general and interoffice correspondence; minutes; speeches; subject files, including topics such as mining and industrial development in various cities and counites; miscellany; and clippings regarding the activities and opinions of the board.