
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1926
1926
1925
1934
2000-100 BCE
1922
1924
1610; 1923
1955; 1830
1924
1926
1922-1923
1922-1923
1922-1923
1922-1923
1925
1926
1923
circa 1925
1923
1925
1924
1923
1925
1990-96
1924
1926
1839 (original); circa 1988 (replica)
1801-1892 (prepared); 1946 (element replaced)
1934
4000-2001 BCE
1930 (replica); 1834 (original)
1925
1925
1922-1923
1923
1922-1923
1922-1923
1922
1922-1923
1922-1923
1922-1925
1924
1922-1924
1922-1923
1924
1923
1922-1923
1922-1923