Era
20th century
9,200
19th century
4,262
1900-1999
3,342
18th century
1,934
1950-
1,781
21st century
1,563
To 1500
1,491
1900 - 1999
1,090
17th century
980
Since 1950
875
1991-2000
819
1800-1899
791
16th century
719
1951-1960
690
1981-1990
637
1961-1970
610
Civil War, 1861-1865
589
2000-2099
563
1945-
559
Early works to 1800
528
1971-1980
507
1891-1962
463
1700-1799
428
Geschichte
421
20e siècle
410
2001-2010
387
1931-1940
350
476-1492
346
1800-1999
345
1939-1945
339
1941-1950
335
2001-2009
335
1875-1965
334
Revolution, 1775-1783
302
1914 - 1918
298
1939 - 1945
292
Medieval, 500-1500
282
1800 - 1899
231
Middle Ages, 600-1500
213
1600-1699
199
1930-
199
Colonial period, ca. 1600-1775
197
20e siècle
187
1989-
178
1931-
169
1949-
166
15th century
164
1971-
163
19e siècle
162
1933-
158
more ...