Which publishing innovation did Penguin Books pioneer in the 1930s that revolutionized their brand positioning and made literature more accessible to the general public?

Publishers and authors have become increasingly savvy about brand positioning in the competitive world of literature. From distinctive cover designs to unique marketing approaches, literary branding has evolved significantly in the digital age. Test your knowledge about how famous literary works and authors have been positioned and marketed throughout history and in contemporary publishing.

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Paperback books with standardized cover designs at affordable prices
First publisher to use author photographs on book covers
Introduction of the hardcover first edition/paperback later model
First to implement the subscription-based book club model