Fonds comprises editorial reports and notes made by Jefferys on works by Thomas Chandler Haliburton. Also included is a letter from Robert Glasgow, Managing Director of The Publishers Association of Canada, outlining the agreement of editorial and illustration work undertaken by Jefferys on a multi-volume series of the works of Haliburton. In addition, there is a typescript of a talk written by Jeffreys regarding his illustrations for the project.