Frost's papers reflect his activities as a speaker and writer on religious topics, as well as some aspects of his work in education. Typescript addresses range from plain sermons and talks on Christmas, the Christian view of the Bible and the preaching ministry of Jesus, to remarks at a McGill symposium (1964) on "The nature and origin of life", and a paper presented to the Society of Biblical Literature and Exegesis on "Apocalyptic and history" (1964), as well as an introductory speech before the Institute of Judaism at Temple Emanu-El. There are also programmes for church lecture series in which Frost participated. His publications from 1958 to 1962 are documented by correspondence, clippings and off-prints. A special file of correspondence concerning his book The Beginning of the Promise also contains reviews (1960). Photographs and press clippings record Frost's career as an educator at McGill; there is also a copy of his report (co-authored with Chalmers Coe) of a visitation of Gordon Divinity School conducted on behalf of the American Association of Theological Schools (1959) and an address to Sigma Xi on 'Research and the Humanities' (1966).