The James S. Thomson fonds consists of handwritten sermons, lecture and teaching notes, prayers, lectures, addresses, photographs, clippings and book drafts reflecting Thomson's diverse career in administration, academic and church life. While most of the material concerns Thomson's work at McGiII's Faculty of Divinity and the Lay School of Theology, there is some material relating to his tenure at the University of Saskatchewan, the United Church of Canada and the Canadian Broadcasting Corporation. Many of the sermons, lectures and addresses are not dated and could have been written in Scotland prior to his arrival in Canada.