The collection descriptions reflect the physical collections at the holding repositories.

Only a selection from each collection has been digitized - for the most part only those original contemporary source materials relevant to the early discovery and development of insulin were included. For more on the selection methodology, please see Our Context.

1. Archives and Records Management Services, University of Toronto:
   • University of Toronto. Board of Governors. Insulin Committee
   • University of Toronto. Office of the President
2. Thomas Fisher Rare Book Library, University of Toronto:
   • Academy of Medicine Collection
   • F. G. Banting (Frederick Grant, Sir) Papers
   • Best (Charles Herbert) Papers
   • Collip (James Bertram) Papers
   • Feasby (William R.) Papers
   • Hughes (Elizabeth) Papers
   • Macleod J.J.R. (John James Rickard) Papers
     (see Best Papers, Research series, boxes 51-52)
3. Balmer Neilly Library, Sanofi Pasteur Ltd.:
   • Sanofi Pasteur Limited (formerly Connaught)