Historical Period
20th century
1,336
19th century
328
1975-
119
21st century
89
1877-1964
73
1929-1968
52
1951-
51
1865-1950
48
To 1964
47
Civil War, 1861-1865
45
18th century
37
1868-1963
34
To 1863
30
1863-1877
28
1941-1955
27
1945-1989
26
1964-
20
1775-1865
16
1865-1877
15
1933-1945
15
1865-1918
14
1980-2020
14
Colonial period, ca. 1600-1775
14
1964-1975
13
1989-
13
1809-1865
12
1861-1865
12
1913-2005
12
1900-1999
11
1945-
11
1925-1965
10
1963-1969
10
2001-2009
10
2009-2017
10
1862-1931
9
1865-1945
9
1865-1951
9
2008
9
1800-1899
8
1865-1900
8
1918-1961
8
1908-1973
7
1927-
7
1960-1980
7
1980-
7
1981-2001
7
1856-1915
6
1865-
6
1920-1980
6
1941-1998
6
more ...