William Parsons (Lord Rosse) (1850). "XXV. Observations on the Nebulæ". Philosophical Transactions of the Royal Society of London. 140: 499–514. doi:10.1098/rstl.1850.0026. S2CID115269149.
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Michael Tubridy (1998). "Reconstruction of the Rosse Six Foot Telescope". Journal of the Antique Telescope Society. 14: 18–24. Bibcode:1998JATSo..14...18T.
William Parsons (Lord Rosse) (1850). "XXV. Observations on the Nebulæ". Philosophical Transactions of the Royal Society of London. 140: 499–514. doi:10.1098/rstl.1850.0026. S2CID115269149.