Era
20th century
611,707
19th century
336,940
1900-1999
210,012
Early works to 1800
177,858
21st century
165,454
18th century
138,785
17th century
118,511
1900 - 1999
85,386
1800-1899
78,538
Civil War, 1861-1865
69,351
2000-2099
67,355
1945-
55,403
1939-1945
40,245
Revolution, 1775-1783
38,002
1564-1616
37,653
16th century
34,042
1700-1799
32,865
20e siècle
31,551
Civil War, 1642-1649
30,309
1600-1699
28,970
1800 - 1899
25,707
To 1500
24,476
Since 1945
24,150
Colonial period, ca. 1600-1775
22,515
1861-1865
22,327
1800-1999
19,180
1914-1918
18,116
1809-1865
17,476
1989-
17,448
1900-2099
17,071
1939 - 1945
16,746
21e siècle
16,329
1945-1989
16,161
1960-
15,769
Early modern, 1500-1700
15,700
1775-1783
15,208
1933-1945
15,093
1971-1980
14,964
1775-1865
14,580
1642-1649
14,450
1918-1945
14,373
20e siècle
14,065
1947-
14,033
1991-2000
14,021
1961-1970
13,979
2000 - 2099
13,400
1946-
13,225
1981-1990
12,649
19e siècle
12,400
1991-
12,119
more ...