The City of Calgary Health Department expanded its public health programs to include immunization, communicable disease control and prevention, food establishment testing, family planning, health education and school nursing services.

Until 1973, the City Health Department and the Local Board of Health were arms of the municipal government. The Department reported, through the Medical Officer of Health, to the Local Board, which received one third of its funding from the City of Calgary and consisted of six members: the Mayor, the Chief Engineer, the Medical Officer of Health, and three members appointed from the community. The Local Board was not active and met infrequently. However, in 1973 the Public Health Act was amended so that the province provided all of the funding to all local boards of health. This separated the Local Board of Health and the City Department of Health from the City of Calgary, and established the Local Board as an independent corporate body.

In 1977, Bill 21 amended Section 32 of the Public Health Act, changing the structure of the Calgary and Edmonton Local Boards of Health. The Calgary Local Board of Health now included ten members: a representative from City Council, the Medical Officer of Health (non-voting), and eight voting members from the community. In 1986, the Calgary Local Board of Health was renamed the Calgary Board of Health. The Board was still responsible for the work of its operational arm, Calgary Health Services.

Following the passing of the Health Authorities Act in 1994, the Calgary Board of Health’s responsibility for public health was transferred to the Calgary Health Region. The Board was dissolved by an Order in Council from the Minister of Health on February 21, 1995.

Many of the Calgary Board of Health records are minutes and attachments from Board meetings following the 1973 provincial restructuring of public health boards. Also included are administrative records from the operational arm of the Board, and records related to public health programs.