Which major publishing house features a dolphin wrapped around an anchor in its historic logo, a symbol dating back to the 15th century Venetian printer Aldus Manutius?

In the publishing world, major literary houses have developed distinct brand identities that help readers identify their books at a glance. These visual identities often carry deep historical significance and reflect the publisher's literary philosophy. How well do you recognize these iconic publishing brands that have shaped our literary landscape for generations?

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Penguin Random House
Doubleday
HarperCollins
William Collins (now an imprint of HarperCollins)