The Rideau Canal, which links Ottawa to Kingston over 202 kilometers, is one of Canada's most remarkable engineering works and a UNESCO World Heritage site. The Rideau Canal Supply Company Limited was a trading company that ensured the supply and services related to the canal's operation. This certificate for 240 shares, issued in the name of Antime Desjardins, represents a significant investment in the Ontario regional economy. The date of September 1912 corresponds to a period of great economic activity in Canada, driven by the wave of immigration and development of the Canadian West. This document illustrates the role of French-Canadian entrepreneurs in the Ontario economy and constitutes a rare piece of scripophily linked to Canadian inland navigation infrastructure