Era
Colonial period, ca. 1600-1775
20
19th century
13
Revolution, 1775-1783
13
1706-1790
6
18th century
6
1791-1868
5
1954-
5
20th century
5
Civil War, 1861-1865
5
1743-1826
4
1644-1718
3
1732-1799
3
1858-1955
3
1564-1616
2
1741-1827
2
1775-1783
2
1783-1789
2
1789
2
1799
2
1800
2
1800-1870
2
1804-1838
2
1821-1902
2
1821-1912
2
1825
2
1850
2
1854
2
1857
2
1859
2
1865-
2
1964-
2
To 1775
2
To 1863
2
1474-1548
1
1720-1801
1
1728-1786
1
1731-1802
1
1731-1806
1
1732-1808
1
1737-1832
1
1748-1789
1
1751-1836
1
1757-1804
1
1760-1831
1
1768-1813
1
1771-1852
1
1775-1815
1
1775-1865
1
1779-1843
1
1783-1809
1
more ...