Fonds consists of records pertaining to Gentles’ roles as a professor of history at York University, as an active member of the Coalition for Life, and as Vice-President and Research Director of the deVeber Institute for Bioethics and Social Research. These include files related to Gentles' teaching at Glendon College, York University and Tyndale University College, his research and publishing activities in the field of history, as well as records pertaining to his administrative activities at York. They also includes files related to Gentles’ research in bioethics—primarily on the subjects of abortion and assisted suicide—as well as records related to the administrative activities of the Coalition for Life and the deVeber Institute.