
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1940
1830 (original); 1967 (model)
1940
1940
1940
1940
1939
1940
1955; 1830
1938 and 1951
2000-100 BCE
1903 (original); 1982 (model)
1939
1839 (original); circa 1988 (replica)
1801-1892 (prepared); 1946 (element replaced)
1940
circa 1939
1939
1990-96
1940
circa 1940
4000-2001 BCE
1990-95
1939
2800 BCE
1939
circa 3000 BCE
1798 (original); 1977 (model)
2050-1750 BCE
1935; 1958
1940
1960-1979
1879 (1956)
1940
1940
1941
circa 1940
2000-1001 BCE
1940-03
1941-12-16
1941-09-01
1941-10-16
1941-09-09
1941-11-12
1941-09-09
1940-09-02
1942-09
1939
1941-10-02