
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1830 (original); 1967 (model)
1914-1916
1911
1917
1909-1910
1913
circa 1915
1668; 1924
1610; 1923
1907
1910
1915
1915
1910
1908
circa 1910
1909
1910
1872 (original); 1909 (model)
1955; 1830
1915-1917
1916-1917
1913
1916
1914
1915
1912
1915
1910
1917
1910
1912
1915
1915
1934
1907
2000-100 BCE
1914
c.1912
1914
1914
1914
1907-1917
1907-1917
1907-1917
1914
1907
1911
1910