Engravings of colour sketches showing solar prominences by Etienne Leopold Trouvelot
1872
1872
1893
1871
1916-05
1916; 1929
1870
1936
1869
1872
1936
1869
1869
1898
1893
1883
1885
1875
1878
1870-1872
1872
1916
1916
1936
1869
1869
1886
1889
1928
1908
1900
1927
1901
1936
1905
1926
1898
1936
1898
1872
1905
1927
1929
1926
1895
1895
1895