||A G.S.C. bronze tablet set horizontally in the southern face of the concrete foundation wall of the St Lawrence Seaway office on the north side of Lakeshore Road approximately 40 m west of the Welland Ship Canal. The tablet is set 3.8 m west of the southeastern corner, 1.3m west of a basement window and 1.2 m below the brown brick siding. Horizontal Position updated to NAD83CSRS in January 2010.
Horizontal position updated September 2018 based on description and Google Earth. Previous position: N 43.216111, W 79.213056.