Historical Period
20th century
132
19th century
39
21st century
26
1980-2020
19
1945-1989
11
18th century
10
1989-
10
17th century
8
1945-
8
Colonial period, ca. 1600-1775
8
1980-
7
Civil War, 1861-1865
6
1948-
5
1975-
5
1933-1945
4
1783-1865
3
1865-1918
3
Revolution, 1775-1783
3
1603-1688
2
1740-1785
2
1800-1899
2
1863-1947
2
1882-1928
2
1882-1965
2
1886-1950
2
1890-1982
2
1917-1948
2
1941 July 7-
2
1946-
2
1960-1980
2
1970-
2
1971-
2
2000-2099
2
2001-2009
2
To 1775
2
To 1783
2
To 1789
2
1600-1775
1
1750-1815
1
1775-1865
1
1789-1869
1
1800-1999
1
1815-1875
1
1822-1885
1
1845-1861
1
1853-1912
1
1858-1919
1
1863-1940
1
1865-1921
1
1865-1933
1
more ...