Era
19th century
36
20th century
10
1800-1899
7
18th century
6
To 1863
5
1812-1885
4
1852-1918
4
To 1964
4
To 1899
3
1785-1830
2
1800-1901
2
1800-1999
2
1803-1879
2
1843-1901
2
1863-1877
2
1887-1940
2
1897-1901
2
To 1999
2
1700-1899
1
1783-1865
1
1849-1877
1
1865-1900
1
1865-1950
1
Civil War, 1861-1865
1