Materials from Jaquays' student years include his valedictory address (1896) and notes for his M.A. thesis on the history of Newfoundland fisheries. His continued involvement with McGill is reflected in his speech to the Graduates' Reunion of 1931, draft articles for The McGill News on the Graduates' Society, correspondence on the Gymnasium Campaign and newsclippings. Business papers comprise addresses and articles on social, economic and business matters (1929-1947), and addresses and memorabilia from the time of his retirement.