
'Haystack' Boiler, 1775-1799
1775-1799 (original); 1900-1907 (model)
1775-1799 (original); 1900-1907 (model)
1839 (original); circa 1988 (replica)
1840
circa 1840
1843
1955; 1830
1842
1842
1845
1842
1841
1893-4
1844
1934
1844
1863-7
1840
2000-100 BCE
1845
1840
1842
1840-1845
1839
1845
1841
1839
1801-1840 (original); 1901 (model)
1845
1842
1841
1839
1772 (original); 1919 (model)
1839
1839
1839
1990-96
1705-1737
1842
1839-1840
1870-1877
1840
circa 1840
circa 1842
1844
4000-2001 BCE
1840
1830 (original); 1967 (model)
1930 (replica); 1834 (original)
1840
1844