
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1830 (original); 1967 (model)
1927
1926
1927
1668; 1924
circa 1925
1926
1927
1924
1924
1926
1927
1925
1925
1927
1925
1924-1927
1955; 1830
1925-1927
1924
1926
2000-100 BCE
1934
1903 (original); 1982 (model)
1930 (replica); 1834 (original)
1927
1926
1839 (original); circa 1988 (replica)
1926
1924-1927
1801-1892 (prepared); 1946 (element replaced)
1924
1925
1924
circa 1927
1925
1990-96
1925
1925
1924
1925-1926
1926
4000-2001 BCE
1934
1990-95
circa 1930; 1920
1925
1927
1730-1760 (original); 1931-1939 (replica)