Era
1854-1861
26
1856
21
1850
18
1857-1861
12
1854
11
1848
9
1862
9
1836
7
1853-1857
7
1861
7
Civil War, 1861-1865
7
1846-1850
5
1849-1853
5
1860
5
1858
4
1861-1865
4
1849
3
1852
3
Civil War
3
1775-1865
2
1820-1870
2
1845-1849
2
1846
2
1777-1852
1
1808-1889
1
1811-1874
1
1813-1861
1
1829-1837
1
1839
1
1840
1
1841
1
1841-1845
1
1845
1
1845-1850
1
1847
1
1849-1861
1
1851
1
1853
1
1857
1
1859
1
1864
1
19th century
1
To 1859
1
To 1865
1