The Perry-Castaneda Library Map Collection at the University of Texas at Austin has a Historical Maps of the United States section. They have 3 maps of the Niagara area: one from 1812, one from 1844, and one from 1894. It’s interesting to see the names of familiar streets and parks on them like Clifton Stree, Queen Victoria Niagara Falls Park, Robinson Street, Murray Street, Ferry Road, and more. The maps have more information on the US side of the Niagara River, but there is still information on the Canadian side.
To see the maps, visit the Historical Maps of the United States page and use your browser’s search function to search for the word Niagara.