
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1830 (original); 1967 (model)
circa 1915
c.1912
1913
1910
1914
1910
1910
1915
1915
1934
2000-100 BCE
1915
1910
1908
1909
1912
c.1912
1910
1915
1872 (original); 1909 (model)
1911
1913
1915
1955; 1830
1914
1914
1914
1912
1910
1839 (original); circa 1988 (replica)
1908
1913
1911
1915
1913
1934
1915
1910
1801-1892 (prepared); 1946 (element replaced)
1908
4000-2001 BCE
c.1912
c.1912
1930 (replica); 1834 (original)
1705-1737
c.1912
1914
1914