Which packaging innovation, introduced in 1935, revolutionized the book industry by making quality literature more affordable and portable for the average reader?

The way books are packaged and presented has evolved dramatically over centuries, reflecting both artistic trends and technological innovations. From ancient scrolls to modern e-readers, the 'packaging' of literature affects how we interact with text. In the 20th century, certain packaging innovations revolutionized how readers engaged with books, making literature more accessible and appealing to wider audiences. Test your knowledge about a particularly significant packaging innovation that transformed the literary marketplace.

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Penguin Paperbacks with their distinctive orange covers and affordable price point
Dust jackets with elaborate artistic designs to protect hardcover books
Book-of-the-Month Club subscription boxes with curated literary selections
Folio Society's leather-bound collector editions with slipcase packaging