Which major publishing house's logo features a dolphin wrapped around an anchor?

Publishing houses have some of the most distinctive and enduring logos in the business world. These visual identities often reflect the character and tradition of the publishing brand while remaining recognizable across generations of readers. Test your knowledge of these iconic literary brand symbols that have graced the spines and title pages of countless beloved books.

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Penguin Random House
Doubleday
William Collins (now HarperCollins)
Aldine Press (historical publisher whose symbol is now used by Doubleday)