Historical Period
20th century
1,848
21st century
1,262
19th century
184
1885-1972
52
1819-1892
48
1830-1886
41
1888-1965
33
1879-1955
27
1883-1963
25
18th century
22
1900-1999
22
1911-1979
22
1887-1972
19
1874-1963
18
Colonial period, ca. 1600-1775
18
1927-2017
17
Civil War, 1861-1865
17
1783-1850
14
1917-1977
13
1929-2012
13
1899-1932
12
1865-1939
11
1809-1849
10
1926-1995
10
1886-1961
9
1902-1967
8
1910-1970
8
1950-
8
1874-1946
7
1907-1973
7
1927-
7
1927-2019
7
1970-
7
Revolutionary period, 1775-1783
7
1904-1973
6
1904-1978
6
1926-1997
6
1926-2005
6
1934-
6
1919-1988
5
1934-2014
5
1948-
5
1971-
5
1753-1784
4
1803-1882
4
1854-1891
4
1860-1936
4
1882-1941
4
1894-1962
4
1914-1972
4
more ...