Era
Colonial period, ca. 1600-1775
20
19th century
17
Revolution, 1775-1783
15
18th century
13
20th century
11
Civil War, 1861-1865
9
1809-1865
5
To 1775
5
1706-1790
4
1644-1718
3
1674-1751
3
1775-1865
3
17th century
3
1810-1883
3
1814-1869
3
1860-1938
3
1918-
3
21st century
3
War of 1812
3
1702-1775
2
1712-1780
2
1729-1785
2
1730-1802
2
1732-1799
2
1743-1828
2
1745-1796
2
1761-1839
2
1765-1836
2
1783-1865
2
1784-1850
2
1786-1836
2
1792-1864
2
1795-1858
2
1799-1889
2
1803-1881
2
1805-1879
2
1806-1878
2
1806-1891
2
1817-1881
2
1820-1891
2
1822-1885
2
1822-1901
2
1831-1881
2
1837-1912
2
1841-1914
2
1843-1916
2
1855-1936
2
1861-1865
2
1889-1953
2
1889-1966
2
more ...