Historical Period
20th century
2,195
19th century
862
21st century
226
18th century
149
1975-
123
Civil War, 1861-1865
118
1951-
85
1865-1950
81
1877-1964
72
1929-1968
54
1865-1877
53
1900-1999
50
1945-1989
46
1980-2020
46
To 1964
46
Colonial period, ca. 1600-1775
44
1933-1945
40
1941-1955
40
1775-1865
39
1945-
39
1868-1963
37
1961-1978
34
1865-1918
32
2008
32
17th century
31
1989-
29
1994-
29
To 1863
29
1863-1877
28
2001-2009
28
1980-
26
1964-
25
1978-1989
25
1818-1895
23
1809-1865
20
1861-1865
20
1865-
20
1918-1961
19
1946-
19
1865-1945
18
1800-1899
16
1865-1951
15
1961-1994
15
1963-1969
15
16th century
14
1993-
14
2009-2017
14
1964-1975
13
1862-1931
12
1918-2013
12
more ...