1851
1850
1841
1842
1854
1840
1845
1853
1850-1856
1855
1840-1845
1893-4
1843
circa 1840
1849
1840-1850
circa 1854
1846
1844
1848-1852
1955; 1830
1845-1851
1856
2000-100 BCE
1850-1857
1852
1934
1863-7
1990-96
1853-1857