Era
20th century
1,455,617
19th century
613,612
1900-1999
557,536
21st century
374,196
18th century
265,396
Early works to 1800
245,071
17th century
189,991
1900 - 1999
188,136
1800-1899
151,663
2000-2099
150,575
1945-
121,188
1939-1945
97,619
16th century
92,015
Civil War, 1861-1865
71,597
20e siècle
71,417
1700-1799
63,518
To 1500
56,364
1800-1999
49,845
Since 1945
49,670
Revolution, 1789-1799
46,966
1800 - 1899
45,099
1564-1616
44,871
1600-1699
42,701
21e siècle
40,724
Revolution, 1775-1783
40,647
1900-2099
37,920
1991-
37,459
1989-
34,566
1914-1918
32,844
1939 - 1945
31,658
1918-1945
31,614
Civil War, 1642-1649
30,688
1933-1945
30,035
1960-
27,625
1945-1989
27,542
2000 - 2099
26,033
Revolution, 1917-1921
25,956
1991-2000
25,509
2001-2010
24,797
1949-
24,033
1961-1970
24,012
19e siècle
23,784
1971-1980
23,648
Colonial period, ca. 1600-1775
23,546
1861-1865
22,951
1500-1599
22,598
20e siècle
22,264
1265-1321
22,061
Early modern, 1500-1700
21,928
1749-1832
21,640
more ...