Era
1856
30
1850
29
1854-1861
27
1857-1861
17
1854
15
1860
15
1862
12
1848
10
1858
9
1836
8
1861
8
Civil War, 1861-1865
8
1849-1853
7
1846-1850
6
1849
5
1852
5
1853-1857
5
1861-1865
5
1845-1849
4
1847
4
1864
3
Civil War
3
1775-1865
2
1814-1866
2
1820-1870
2
1829-1837
2
1846
2
1849-1861
2
1859
2
1
1
1767-1848
1
1777-1852
1
1790-1856
1
1808-1889
1
1811-1874
1
1813-1861
1
1820
1
1835
1
1837
1
1839
1
1840
1
1841
1
1841-1845
1
1845
1
1845-1850
1
1851
1
1853
1
1854-1861 x Speeches in Congress
1
1857
1
19th century
1
more ...