[2] During his time in Edinburgh, Lockhart served as the student minister of North Leith Parish Church.
[4] 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 kept the letter and disseminated copies of it; Crowe was subsequently fired on the grounds of his incompatibility with the avowed purposes of the College.
Hostile negotiations between Crowe and Lockhart gained national attention, and the newly formed Canadian Association of University Teachers eventually ruled that Crowe's dismissal was "an unjust and unwarranted invasion of the security of academic tenure to which he was entitled.
[1] Upon retiring from active ministry and his position at the University of Winnipeg, Lockhart moved to Etobicoke, Ontario.