
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1830 (original); 1967 (model)
1920
1920
1921
1934
2000-100 BCE
circa 1920
1920
1955; 1830
1921
circa 1920
1920
1920
1839 (original); circa 1988 (replica)
circa 1920
circa 1920
1920
1934
1801-1892 (prepared); 1946 (element replaced)
1921
4000-2001 BCE
1930 (replica); 1834 (original)
1903 (original); 1982 (model)
1936
1990-95
1834-1836
1610; 1923
1925; 1862
1962-05
1921
1960-1979
1668; 1924
1920
1921
1921
1920
1920
1970-1900
1920
1873 (original); 1990 (copy)
1921
1920
1920
1970-1875
circa 1920; 1907
2000-500 BCE
2000-500 BCE
2000-500 BCE
1991-1786 BCE