1949. The "Mentally Incapacitated Persons Act" is instated, replacing the "Estates of the Mentally Incompetent Act" in Alberta, Canada. It redefines the term, "person of unsound mind" to mean a lunatic, a mentally incapacitated person or a mental defective, and 'unsoundness of mind' and 'to be of unsound mind' have corresponding meanings."

-Amy Dyrbye

• Province of Alberta. (1949). An Act to amend The Estates of the Mentally Incompetent Act. Retrieved from http://ourfutureourpast.ca/law/page.aspx?id=2970913.