Thousand Island Park, NY, Jun 22, 2011 — This week, our Adirondack reporter Brian Mann has been exploring the St. Lawrence Seaway. Construction of the massive system of locks and channels in the 1950s changed the river profoundly. As part of his trip, Brian set off in his kayak around Wellesley Island, to see if he could catch a glimpse of what the St. Lawrence might have looked like before all that. He sent back an audio postcard.