Historical Period
20th century
863
21st century
481
19th century
274
1945-
241
1989-
139
1960-
105
1945-1989
104
1980-
104
18th century
103
1991-
102
2000-
89
1960-1980
82
1980-2020
78
1933-1945
70
2002-
68
1994-
63
1975-
61
To 1865
57
1990-
54
1918-1945
48
Civil War, 1861-1865
47
1970-
45
1865-1950
42
1865-1918
39
1982-
39
2001-2009
39
To 1500
39
1918-1933
37
1947-
37
17th century
36
1951-
35
1963-1969
34
1976-2000
33
1976-2002
33
1959-1990
31
1979-
30
1997-
29
1945-1991
27
1948-1980
25
1969-1974
25
1946-
24
1981-1989
24
1985-
24
1961-1969
23
1985-1991
23
1861-1865
22
1949-
22
1970-1991
22
1993-2001
22
1969-
21
more ...