Era
19th century
12
1865-1950
4
1775-1865
3
1818-1895
3
1856-1915
3
1868-1963
3
20th century
3
Civil War, 1861-1865
3
1800-1899
2
1816-1882
2
1833-1887
2
1840-1889
2
1865-1877
2
1885-1954
2
18th century
2
To 1775
2
To 1964
2
1800-1950
1
1808-1884
1
1850-1918
1
1886-1954
1
1900-1999
1
To 1899
1
To 1999
1