
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1830 (original); 1967 (model)
circa 1910
1913
circa 1915
1839 (original); circa 1988 (replica)
1911
1913
1668; 1924
1990-96
1610; 1923
1772 (original); 1919 (model)
2000-100 BCE
1925; 1862
1902; 1913-1920
1911
1915
1915
c.1912
1990-95
circa 1912
1934
c.1912
1913
1934
1705-1737
1580-1588; 1930
1912
1910
1915
1914
1903 (original); 1982 (model)
4000-2001 BCE
1910
1960-1979
2050-1750 BCE
circa 1915
1912
1955; 1830
circa 1913
c.1912
c.1912
1915
1915
1936
1910
1834-1836
1910
1798 (original); 1977 (model)
1912