Examples are Florence Nightingale, William Osler, Wilfred Grenfell, Frederick Banting. All of them are located under the WZ 20-100 call numbers. WZ 100 is the location for biographies of individuals. A few examples of collective biographies are Jack, Donald. Indomitable lady doctors.
Bibliographies are an excellent place to start researching a given topic.
Ask at Reference Desk. Centenary of Index Medicus, 1879-1979. Secondary sources in the history of Canadian medicine. Hannah Institute, 1984. This book contains full bibliographic information on approximately 5,000 articles, books, and theses on Canadian medical history.