Revised Statutes of Ontario

The Revised Statutes of Ontario (RSO; Canadian French: Lois refondues de l'Ontario, LRO) is the name of several consolidations of public acts in the Canadian province of Ontario, promulgated approximately decennially from 1877 to 1990. Each revision contains a consolidated version of all non-obsolete statutes of general application, incorporating amendments enacted before the consolidation date.

Source: Wikipedia — Revised Statutes of Ontario (CC BY-SA 4.0)