Topographic map of the Niagara Gorge
Geological Survey (U.S.)
1912
Niagara River Region (NY and Ont)--Maps, Topographic
G3312 N52 C222 12 1912
Map & Data Library, University of Toronto Libraries
1:12,000
(W 79°5'--W 79°2'/N 43°11'--N 43°3'30")
mdl:G3312_N52_C222_12_1912
http://go.utlib.ca/cat/4475942https://collections.library.utoronto.ca/view/mdl:G3312_N52_C222_12_1912
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