These records are organized into two subgroups: the Montana State Board of Entomology and the Montana State Board of Health. The Montana State Board of Entomology Records include general correspondence (1909-1954), primarily between State Entomologist R.A. Cooley and other members of the State Board of Entomology (W.G. Cogswell, W.J. Butler); employees of the Board such as field researchers (Fred A. Morton, Glen M. Kohls, A.E. Seamons, Clifford Corkins, Elmer Fessler, F.J. O'Donnell, F.B. Linfield, Roscoe W. Wells); representatives from the United States Board of Entomology, U.S. Department of Agriculture, and U.S. Public Health Service (F.C. Bishop, L.D. Fricks, W.D. Hunter, L.O. Howard, W.V. King, H.P. Wood); scientists working on tick diseases (including requests for tick specimens); Montanans and public health officials requesting information about the disease; etc. This correspondence is arranged as it was kept by Dr. Cooley, by correspondent. There is also correspondence of W.G. Cogswell as chairman of the State Board of Entomology and R.R. Parker as assistant entomologist. The subgroup also includes court papers (1913); financial records (1932-1941); minutes of the Board (1913-1949); organizational materials (1913-1940); reports (1909-1949), including those of field researchers and the Board's monthly and annual reports; subject files (1927-1954); writings (1912-1937) of W.J. Butler, R.A. Cooley, R.R. Parker, and others; miscellany (1905-1938); and clippings (1908-1943). The Montana State Board of Health subgroup includes T.D. Tuttle's correspondence (1908-1912) about Rocky Mountain spotted fever and other correspondence (1919-1957) concerning the Rocky Mountain Laboratory, diseases, etc.; financial records (1912); reports (1929-1956) concerning typhoid fever, polio vaccine, etc.; subject files (1914-1966) including materials on bubonic plague, leprosy, and health conditions on Indian reservations in the state; and miscellany (1911, 1929). Printed materials and maps, photographs, and artifacts have been separated from these records and transferred to the Library, Photo Archives, and Museum respectively.