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