Records held by the Montana Historical Society, Library and Archives Department include those created by the Montana State Board of Entomology (1905-1966). The Montana State Board of Entomology was created in 1913 to study Rocky Mountain spotted fever and methods for its control. The board was composed of the secretary of the State Board of Health (serving as chairman), the state veterinarian, and the state entomologist. Throughout the early years of research on tick fever, representatives from the U.S. Public Health Service worked in Montana in cooperation with the State Board of Health and the State Board of Entomology. In 1927 the state built the Rocky Mountain Laboratory at Hamilton, which was taken over by the federal government in 1932.

Montana State Board of Health subgroup includes T.D. Tuttle's correspondence (1908-1912) about Rocky Mountain spotted fever, the Rocky Mountain Laboratory, diseases, etc.; reports (1929-1956) concerning typhoid fever, polio vaccine, etc.; and subject files (1914-1966) concerning bubonic plague, leprosy, and health conditions on Indian reservations in the state.

Entry made November 27, 2006