Era
20th century
8
1900-1999
3
19th century
3
20e siècle
3
1929
2
To 1964
2
1745-1808
1
1759-1818
1
1775-1865
1
1775-1950
1
1783-1865
1
1809-1851
1
1838-1910
1
1841-1898
1
1865-
1
1865-1918
1
1885-1980
1
18th century
1
1910-1985
1
1920-
1
1933-
1
1947-
1
Civil War, 1861-1865
1
Colonial period, ca. 1600-1775
1
Pittsburgh
1