Era
Early works to 1800
21
1945-
15
1960-
14
20th century
14
21st century
12
1975-
9
1979-
9
Since 1960
8
War of 1812
8
1989-
7
Since 1945
7
Since 1975
7
1900-1999
6
1976-2000
6
1981-
6
1991-
6
1635-1694
5
1918-
5
1981-1993
5
1981-2001
5
2000-2099
5
2009-
5
17th century
4
1840-1931
4
1952-
4
1971-1981
4
1976-
4
1988-
4
1993-2001
4
Revolution, 1775-1783
4
Since 1989
4
18th century
3
1900 - 1999
3
1960-1988
3
1981 - 1993
3
2000 - 2099
3
2001
3
Since 1918
3
Since 1991
3
1928-
2
1945-1989
2
1945-1992
2
1959-
2
1961-1971
2
1970-
2
1970-1973
2
1971-
2
1981 - 2001
2
1983-
2
1985-1991
2
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