Which major publishing house's logo features a dolphin wrapped around an anchor, a Renaissance symbol dating back to the 16th century?

The publishing industry has some of the most recognizable and thoughtfully designed corporate logos in the world. These visual identities often reflect the heritage, values, and literary focus of these companies. This trivia poll tests your knowledge of famous publishing house logos and their symbolic meanings. How well do you know the visual branding behind the books on your shelf?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Penguin Random House
Doubleday
Aldus (now part of Penguin Classics)
HarperCollins