
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1934
2000-100 BCE
Before 1932
1932
1932
1955; 1830
1932
1933
1933
1933
1990-96
1933
1839 (original); circa 1988 (replica)
1801-1892 (prepared); 1946 (element replaced)
1934
Before 1932
4000-2001 BCE
1933
1932-1933
1903 (original); 1982 (model)
1830 (original); 1967 (model)
1990-95
1977; 1204-1206
1932
1936
2050-1750 BCE
1932
1962-05
1932
1879 (1956)
1933
1933
1933
1932
1932
1932
circa 1933
circa 1933
circa 1932
1933
circa 1932
circa 1932
1932
1940-03
circa 1933
1933
circa 1932
1932
1933-05