Category:Northern Frontier Forts

 (F) 45.0058333, -73.3486111, Fort Montgomery (2) (1844-1910) (F) 43.262644, -79.063261, Fort Niagara (1726-1963) (F) 42.2994827, -83.0960332, Fort Wayne (2) (1843-1949) (F) 43.465878, -76.508242, Fort Ontario (1755-1946) (F) 45.8525, -84.6180556, Fort Mackinac (1780-1895) (F) 42.904184, -78.899925, Fort Porter (1) (1841-1921) (F) 42.9005556, -78.8966667, Fort Porter (1) (1841-1921) (F) 42.9963915, -82.4276868, Fort Gratiot (1814-1879) (F) 46.500364, -84.342009, Fort Brady (2) (1822-1892) Site 1

See Third System