The Evolution of Ontario's Boundaries - 1912

Ontario's boundaries were pushed north to Hudson Bay in 1912, completing the province's extension to its current borders.

Map scanned from the Economic Atlas of Ontario / Atlas Économique de l'Ontario
W. G. Dean, Editor/ Directeur; G. J. Mathews, Cartographer/ Cartographe
Printed 1969 by University of Toronto Press for the Government of Ontario