
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1830 (original); 1967 (model)
circa 1915
1955; 1830
1914
1915
1915
1934
2000-100 BCE
1914
1914
1915
1915
1916
1914
1915
circa 1916
1914-1916
1839 (original); circa 1988 (replica)
1916
1915
1903 (original); 1982 (model)
1934
1915
1801-1892 (prepared); 1946 (element replaced)
1914
1914
4000-2001 BCE
1930 (replica); 1834 (original)
1705-1737
1915-1916
1936
1990-95
1610; 1923
1834-1836
1925; 1862
1914
1962-05
1960-1979
1668; 1924
1783; 1914
1916
1914
1916
1916
1916
1916
1915
1915
1914