This collection is a subgroup (Division) of the Montana Department of Livestock records, RS 500. Please see the primary finding aid for more Montana Department of Livestock records.

The bulk of the records consist of general correspondence (1919-1974) arranged at first by correspondent and subject, and after 1960 almost entirely by correspondent. Correspondence primarily concerns cattle shipments, law enforcement, brand registration, legislation, and relations with other states' law enforcement and livestock agencies and local stockgrowers associations. In addition, there are case files (1927-1973) concerning cattle thefts, marketing problems, and fee collection; financial records, including journals of receipts and disbursements (1887-1891) and livestock market shipping ledgers (1929-1966); scattered minutes of annual meetings, district and inspectors meetings, and meetings of other organizations on which the Livestock Commission held a seat; and reports, including annual reports (1935-1940, 1946-1949), monthly reports (1950-1960), and investigative reports. The reports also include an unpublished brand book (1984-1985) that is organized by geographic region; an index is included for each region. A miscellany series includes lists of brands, brand inspectors, lost and stolen cattle from Canada, North and South Dakota, Oregon, Colorado, Washington, and the Crow and Northern Cheyenne Indian Reservations.