
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
circa 1915
1830 (original); 1967 (model)
1914
1915
1913
1915
1915
1934
1914
1914
1915
2000-100 BCE
1914
1915
1955; 1830
1915
1913
1934
1913
1801-1892 (prepared); 1946 (element replaced)
1839 (original); circa 1988 (replica)
1705-1737
1914
1914
4000-2001 BCE
1903 (original); 1982 (model)
1915
1913
1930 (replica); 1834 (original)
1668; 1924
1990-95
1610; 1923
1902; 1913-1920
1925; 1862
1936
1834-1836
circa 1914
1913
1913
1913
1913
1913
circa 3000 BCE
1914
1915
1913
1913
1915
2000-1350