Which of these literary brand mascots has been in continuous use for the longest time as a publisher's official symbol?

The publishing industry has created some of the most recognizable brand mascots in marketing history. These characters have become cultural touchstones, representing major publishing houses and their literary offerings. This trivia question tests your knowledge about the intersection of literature, marketing, and brand positioning in the publishing world. Can you identify which famous mascot has the longest continuous history representing its publishing brand?

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Penguin Books' penguin logo (first appeared in 1935)
Random House's house logo (first appeared in 1927, but has undergone significant redesigns)
Simon & Schuster's sower logo (first appeared in 1944)
HarperCollins' torch logo (created after the 1990 merger)