
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1903
1830 (original); 1967 (model)
1902
circa 1900
1901
1900
1934
1900
2000-100 BCE
after 1903
1904
1902
1903
1903
1902
1872 (original); 1909 (model)
1900
1901
circa 1900
1904
1901
1901
1901
1955; 1830
1901
1900
1839 (original); circa 1988 (replica)
1900
circa 1900
circa 1900
1901
1901
circa 1900
1903
1901
1901
circa 1900
1934
1903
1901
1899
1801-1892 (prepared); 1946 (element replaced)
1903
1904
4000-2001 BCE
1904
1930 (replica); 1834 (original)
1705-1737
1903