20th century 1,211
19th century 413
18th century 228
17th century 120
16th century 102
21st century 95
To 1500 59
Early modern, 1500-1700 50
1783-1865 31
1945- 30
1801-1917 27
1865-1918 21
1917-1970 19
1918-1945 19
Colonial period, ca. 1600-1775 19
1066-1485 17
1865- 17
1564-1616 14
1945-1989 14
1268-1559 13
1975- 13
1980-2020 13
1985-1991 13
1976- 11
1783-1850 10
1803-1882 10
1918-1933 10
1989- 10
1865-1939 9
1933-1945 9
1944- 9
1970- 9
Revolutionary period, 1775-1783 9
1789-1900 8
1868-1963 8
1908-1960 8
1924-1987 8
Revolution, 1789-1799 8
-1536 7
1844-1900 7
1908-1986 7
1949- 7
1975-1985 7
221 B.C.-960 A.D. 7
Middle English, 1100-1500 7
1843-1916 6
1882-1941 6
1890-1948 6
1917-1936 6
1933-2004 6
1991- 6
476-1492 6
Civil War, 1936-1939 6
Medieval, 500-1500 6
Middle Ages, 600-1500 6
Revolution, 1775-1783 6
Revolution, 1917-1921 6
1600-1868 5
1644-1912 5
1775-1783 5
1809-1882 5
1879-1955 5
1897-1962 5
1899-1961 5
1914-1940 5
1929-2007 5
1943- 5
1953-1985 5
1970-1991 5
1971- 5
750-1258 5
960-1644 5
Civil War, 1642-1649 5
Civil War, 1861-1865 5
To 1775 5
To 221 B.C. 5
15th century 4
1688-1744 4
1709-1784 4
1775-1865 4
1800-1933 4
1809-1865 4
1817-1862 4
1819-1892 4
1821-1881 4
1835-1910 4
1856-1915 4
1856-1939 4
1862-1937 4
1902-1967 4
1906-1989 4
1909-1993 4
1915-1998 4
1946- 4
1961-1969 4
1976-2002 4
Elizabeth, 1558-1603 4
Modern period, 1500- 4
Qing dynasty, 1644-1912 4
Stuarts, 1603-1714 4