1839
1850
1841
1842
1854
1840
1845
1853
1837
circa 1840
1849
1851
circa 1854
1855
2000-100 BCE
1850-1856
1846
1848
1955; 1830
1843
1845-1851
1848-1852
1844
1838
1840-1845
1852