Collection consists of the personal diary of MacMartin describing his trip to Northern Ontario to conclude negotiations of Treaty No. 9 - The James Bay Treaty with Ojibway (Anishinaabe), Cree (including the Omushkegowuk) and other Indigenous Nations (Algonquin); plus various transcriptions and ancillary material.
Fonds consists of letters home to various family members, during the course of World War One, from the MacKenzie brothers describing their life and experiences with various units of the Canadian Expeditionary Force, including No.7 (Queen's) Canadian General Hospital and The Canadian Field Artillery.