The largest island may be twenty leagues in circuit, the others five or six. The easternmost is the smallest island, and most remarkable, having a high sugar-loaf hill.
William Bligh. A Narrative Of The Mutiny, On Board His Majesty's Ship Bounty; And The Subsequent Voyage Of Part Of The Crew, In The Ship's Boat
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She is a little fat old lady, with blue eyes and a red face, and wears a huge cap like a sugar-loaf, ornamented with purple and yellow ribbons.
Edgar Allan Poe. The Works of Edgar Allan Poe — Volume 4: The Devil in the Belfry (1839)
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comic actors of the old school, whose sugar-loaf foreheads are scarcely to be seen nowadays outside the collections of portraits that hang in the humbly historic green-rooms of little, out of date theatres, where they are represented in the parts of servants or high priests,
Marcel Proust. In Search of Lost Time [volume 3]
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(The women's heads coalesce. Old Gummy Granny in sugarloaf hat appears seated on a toadstool, the deathflower of the potato blight on her breast.)