Era
Revolution, 1775-1783
6
1831-1914
3
1900
3
Civil War, 1861-1865
3
ca. 1727-1825
3
1732-1799
2
1796-1866
2
1841-
2
1843-
2
1848-1913
2
1850-1914
2
1854-1911
2
1857-1939
2
1863-1911
2
1868-1938
2
Colonial period, ca. 1600-1775
2
Revolution
2
1644-1718
1
1731-1811
1
1775-1783
1
1787?-1868 or 1871
1
1792-1871
1
1829-1
1
1832-
1
1882-1976
1
19th century
1
War of 1812
1