John Herschel: Results of astronomical observations made during the years 1834, 1835, 1836, 1837, 1838, at the Cape of Good Hope; being the completion of a telescopic survey of the whole surface of the visible heavens, commenced in 1825. bibcode:1847QB3.H52........archive.org
James Dunlop: A Catalogue of Nebulae and Clusters of Stars in the Southern Hemisphere, Observed at Paramatta in New South Wales. JSTOR:107841, bibcode:1828RSPT..118..113D
John Herschel: Results of astronomical observations made during the years 1834, 1835, 1836, 1837, 1838, at the Cape of Good Hope; being the completion of a telescopic survey of the whole surface of the visible heavens, commenced in 1825. bibcode:1847QB3.H52........archive.org
Harlow Shapley, Harvia H. Wilson: The Magellanic Clouds, IV. The Absolute Magnitudes of Nebulae, Clusters, and Peculiar Stars in the Large Cloud.bibcode:1925HarCi.271....1S
Karl Gordon Henize: Catalogues of Hα-EMISSION Stars and Nebulae in the Magellanic Clouds.bibcode:1956ApJS....2..315H
James Dunlop: A Catalogue of Nebulae and Clusters of Stars in the Southern Hemisphere, Observed at Paramatta in New South Wales. JSTOR:107841, bibcode:1828RSPT..118..113D
