1943 Map of Grindstone

About this map

The St Lawrence River serves as the international boundary between New York and Ontario in this wartime survey, which highlights the complex archipelago of the Thousand Islands. On the American side, Grindstone Island is a focal point of rural life, featuring the settlement of Thurso with its Thurso Cem and Grindstone (PO), alongside School No 15. The Canadian shore is anchored by the industrial and transport hub of Gananoque, where the Gananoque River meets the larger waterway near the Canandian National railway at Gananoque Junction. Navigation aids like the Spectacles Shoal LH and Red Horse Rock LH point to the critical maritime traffic through the Admiralty Islands and the Bateau Channel. This map captures a landscape defined by seasonal recreation at Tremont Park and the Golf Course, balanced by the permanent farming communities of Howe Island and Cheeseborough.