Era
1857-1861
11
1856
8
1860
6
1854-1861
4
1846-1850
3
1850
3
1853-1857
3
1859
3
1861-1865
3
Civil War
3
Civil War, 1861-1865
3
1775-1865
2
1836
2
1846
2
1858
2
John Brown's Raid, 1859
2
1780-1842
1
1790-1862
1
1791-1868
1
1797-1874
1
1829-1837
1
1830
1
1832-1875
1
1834
1
1837
1
1839
1
1842
1
1843
1
1848
1
1854
1
1861
1
Revolution, 1835-1836
1