Engravings of colour sketches showing solar prominences by Etienne Leopold Trouvelot
1872
1872
1870
1875
1880
1872
1871
1870-1872
1860-1868
1936
1886
1898
1872
1883
1911
1893
1916-05
1936
1872
1917
1872-1884
1858-1861
1885
1893
1878
1889
1861
1861
1936
1878
1878
1917
1861
1878
1926
1861
1861
1878
1926
1926
1869
1869
1869
1916; 1929
1926
1926
1869
1869
1916
1916