Era
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1888-1965
1
1891-1986
1
1895-1966
1
1898-1961
1
18e siècle
1
18th century
3
1906-
1
1906-1976
1
1907-1972
1
1910
1
1912-
1
1914-1918
1
1916-1899
1
1924-
1
1926-
1
1926-2023
1
1933-1953
1
1951-
1
19e siècle
1
19th century
7
20th century
1
2d, 1800
1
Anglo-Saxon period, 449-1066
1
Census, 2nd, 1800
2
Census, 2nd, 1880
1
Census, 3rd, 1810
1
Census, 7th, 1850
1
Civil War, 1861-1865
15
Colonial period, ca. 1600-1775
8
Early modern, 1500-1700
1
Modern period, 1750-
1
Old English, ca. 450-1100
1
Pennsylvania
1
Revolution
1
Revolution, 1775-1783
11
Since 1750
1
To 1865
1
War of 1812
3
active 19th century
1
approximately 1747-1783
1
b. 1762
1
b. 1837
1
b. 1862
1
b. 1880
1
ca 1600-1775 (Période coloniale)
1