The strongest and most visible link is that between Indian and Northern Health Services and the Department of Indian and Northern Affairs (DIAND). Although Indian Health Services was transferred from the Department of Mines and Resources to the Department of National Health and Welfare in 1945, the records relating to Indian Affairs (RG 10) reflect the continuing responsibility to provide health services to treaty or status Indians in Canada. The main files which relate to health services within the Indian and Inuit Affairs Program are found in subject blocks 17 and 9 of the central registry system (See RG 10 B3). Files in Block 17 relate to general information on health including hospitals, prevention, insurance, treatment, sanitation, and tuberculosis. Subject files in Block 9 generally relate to medical equipment and supplies. Researchers should also note Blocks 6585 of the Indian and Inuit Affairs central registry files (E-series). This block includes information on health and medical services, health care programs, and hospital services etc. Additional information on accommodation such as Medical Services Branch clinics, will be found in the 4130 block., There are three other record groups relating to natives and northern affairs which are of interest here: Indian Affairs and Northern Development (RG 22), Northern Affairs Program (RG 85), and Yukon Territorial Records (RG 91). RG 22 contains executive support material and a variety of high level policy records created by/for the Deputy Minister of Indian and Northern Affairs, primarily for the period 1920-1970. Some older, isolated records from the preceding Department of the Interior may also be found. Researchers should note block 40 (Northern Administration) in the registry system, particularly 40-12 (Health Services). RG 85, contains records which support the actual administration of the Northern Affairs Program from 1920. Block 550 (Health) and blocks 6475-6699 (Health and Social Services) in the post 1970s records may contain material to INHS functions. GAD also holds microfilm copies of the records of the Yukon Territorial Government for the period 1894 to 1951., The Royal Canadian Mounted Police (RG 18) has played an important role in the development of both the West and the North and in federal government involvement with and care of both native Indians and the Inuit. Researchers should be aware of the large body of so-called "Patrol Reports" and other administrative records found in RG 18 for the period 1920 to the present; these reports summarize the diverse local activities of the RCMP officers as they visited various communities. The (Royal) Northwest Mounted Police fulfilled the same functions for the period 1873-1920, and their records are also found in RG 18.