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M65 was discovered by Charles Messier and included in his Messier Objects list. However, William Henry Smyth accidentally attributed the discovery to Pierre Méchain in his popular 19th-century astronomical work "A Cycle of Celestial Objects" (stating "They [M65 and M66] were pointed out by Méchain to Messier in 1780"). This error was in turn picked up by Kenneth Glyn Jones in "Messier's Nebulae and Star Clusters". This has since ramified into a number of other books by a variety of authors.