 Under his tenure, the college's downtown campus substantially expanded with the construction of several new buildings.In 1958, Lockhart instigated the Crowe Case, which served as a catalyst for the development of national policy protecting the rights of academic freedom and the status of tenure in Canadian higher education.Lockhart obtained a letter critical of the religious and academic environment at United College, written by United College history professor Harry S. Crowe to his colleague William Packer.