Era
20th century
456
19th century
195
18th century
132
1564-1616
127
17th century
102
Early modern, 1500-1700
86
16th century
77
1900-1999
77
Civil War, 1861-1865
55
-1400
45
To 1500
38
Middle English, 1100-1500
37
1945-
31
Colonial period, ca. 1600-1775
31
21st century
30
Early modern and Elizabethan, 1500-1600
30
Revolution, 1775-1783
24
Old English, ca. 450-1100
22
1933-1945
21
1608-1674
20
1800-1899
18
1899-1961
16
1700-1799
15
1500-1599
14
Middle Ages, 600-1500
13
Restoration, 1660-1700
12
1500-1699
11
1600-1699
11
1897-1962
11
1709-1784
10
1667-1745
9
1812-1870
9
1835-1910
9
1843-1916
9
1865-1939
9
1874-1963
9
1882-1941
9
1627-1691
8
1830-1886
8
1939-1945
8
Medieval, 500-1500
8
Stuarts, 1603-1714
8
1733-1804
7
1770-1850
7
1775-1817
7
1803-1882
7
1817-1862
7
1861-1865
7
1875-1955
7
1900-2099
7
more ...