Era
20th century
16
19th century
15
1900-1999
5
1849-1861
2
1856
2
20e siècle
2
To 1865
2
1706-1790
1
1732-1799
1
1774-1860
1
1792-1865
1
1803-1847
1
1804-1847
1
1807-1889
1
1808-1858
1
1812-1896
1
1819
1
1826-1882
1
1827
1
1828
1
1829
1
1830
1
1831
1
1835-1919
1
1850-1922
1
1861-1948
1
1864-1922
1
1865-1934
1
1867-1909
1
1873-1947
1
1896-
1
1905-
1
1905-1982
1
1910-1989
1
1913-1921
1
1929
1
1946-
1
Civil War, 1861-1865
1
Colonial period, ca. 1600-1775
1
Fire, 1845
1
French and Indian War, 1754-1763
1
Geschichte 1750-1940
1
Pittsburgh
1
Revolution, 1775-1783
1
b. 1842
1
d. 1902?
1