
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1926
1926
1927
1930
circa 1930
1925
1928
1934
2000-100 BCE
before 1928
1930-1931
1931
1927
1924
circa 1930
1928
1955; 1830
1925-1928
1927-1929
1931
1931
1927
1924
1927
1926
1928
1925
1926
1924-1927
1931
circa 1925
1925
1928
1924
1927
1930
1930
circa 1927
1925
1990-96
1924-1930
1924
1929
1925-1930
1931
1926
1839 (original); circa 1988 (replica)
1801-1892 (prepared); 1946 (element replaced)
1934