Which early 20th century marketing innovation is considered the first major 'influencer campaign' in publishing history, helping to establish the modern bestseller system?

Before social media, literary influencers shaped reading trends through different channels. This poll explores a pivotal moment in literary influencer marketing history that transformed how books were promoted and consumed. Test your knowledge of how influential figures have shaped literary markets throughout history and the innovative marketing techniques that created literary sensations.

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The Book-of-the-Month Club (1926), which used expert endorsements to curate monthly selections
The New York Times Bestseller List (1931), which ranked books solely by sales figures
The Pulitzer Prize (1917), which highlighted critical acclaim over commercial success
Publisher's Weekly magazine (1872), which focused on industry news rather than consumer recommendations