
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1926
1926
1930
circa 1930
1925
1928
2000-100 BCE
before 1928
1927
1924
circa 1930
1610; 1923
1924
1927
1926
1926
1923
1924-1927
1934
1923
1925
1928
1924
1923
1927
1928
1955; 1830
1925-1928
1927-1929
1927
1928
1925
circa 1925
1930
1930
circa 1927
1925
1990-96
1924-1930
1924
1925-1930
1926
1839 (original); circa 1988 (replica)
1801-1892 (prepared); 1946 (element replaced)
1928
1930
4000-2001 BCE
1930 (replica); 1834 (original)
1926-1928