
'Haystack' Boiler, 1775-1799
1775-1799 (original); 1900-1907 (model)
1775-1799 (original); 1900-1907 (model)
1830 (original); 1967 (model)
1832
1840
1835
2000-100 BCE
1840
1934
circa 1840
1837
1955; 1830
1893-4
1841
1838
1837
1863-7
1833
1836
1835
1838
1837
1837
1834
circa 1832
1839
1834
1834
1837
1837
1837
1837
1841
1839
1839
1833
circa 1840
1840
1838
4000-2001 BCE
1839 (original); circa 1988 (replica)
1772 (original); 1919 (model)
1841
1839
1840
1990-96
1832
1840
1835
1838
1835