'Haystack' Boiler, 1775-1799
1775-1799 (original); 1900-1907 (model)
1775-1799 (original); 1900-1907 (model)
1819
1801-1840 (original); 1901 (model)
1894
1889-1902
1923
1948
1840 (original); 1892 (model)
1965
1950
1900
1851-1900
1867 (patent)
1903