
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1830 (original); 1967 (model)
1945
2000-100 BCE
1945
1944
1938 and 1951
1944-1945
1955; 1830
1839 (original); circa 1988 (replica)
circa 1945
1801-1892 (prepared); 1946 (element replaced)
4000-2001 BCE
1944
1903 (original); 1982 (model)
1990-95
1945
1944
1962-05
1944-1945
1945
1960-1979
1945
1945
1944
1970-1900
1944
1873 (original); 1990 (copy)
1944
1944
1970-1875
1945
2000-500 BCE
2000-500 BCE
2000-500 BCE
1991-1786 BCE
1991-1786 BCE
2000-500 BCE
1501-1600; 1978
1945
1945
1945
1945
1945
30 CE
30 CE
1944
2686-2613 BCE
1945
1859; 1986