"Coggia's Comet". Haydn's Dictionary of Dates and Universal Information (17th ed.). NY: Harper and Brothers. 1884. p. 175. To the casual observer near London the comet became readily visible about July 4th.
Bailey, Greg, ed. (2014). "The Voyage of the F. H. Moore" and Other 19th Century Whaling Accounts. McFarland. p. 60. ISBN9780786478668. According to Samuel Grant Williams’s journal entry for July 10, 1874, “… About the 3d this month we began to see a beautiful comet in the southern sky. It has been visible every night since. We see it a little after sundown and about midnight it fades from sight. …” Williams’s whaling ship (under the command of Captain Soper) might have been near 24.22°N, 85.40°W.
Kronk, G. W. (2003). "C/1874 H1 (Coggia)". Cometography: A Catalog of Comets. Vol. 2: 1800–1899. Cambridge University Press. pp. 405–412. ISBN0-521-58505-8.
Hayter, Henry Heylyn (1875). "alleged sightings near Melbourne". Victorian Year Book for 1874. p. 226. "July 26.—Coggia's comet first seen in Victoria from Wilson's Promontory, Point Lonsdale, and the suburbs of Melbourne."
"Comet Coggia". The Astronomical Register (140): 183–193. August 1874.
David H. Levy: Poet and Observer: Gerard Manley Hopkins and some mid-19th Century Comets. In: Journal of the Royal Astronomical Society of Canada. Vol. 75, No. 3, 1981, pp. 139–150. (PDF; 974 kB).
hathitrust.org
babel.hathitrust.org
A. Guillemin, trans. & ed. by J. Glaisher (1877). "comet observed by R. L. J. Ellery". The world of comets. London. p. 353.{{cite book}}: CS1 maint: location missing publisher (link)
