Which innovative book packaging format, introduced in 1935, revolutionized the publishing industry by making literature more affordable and accessible to the masses?

The publishing world has seen numerous packaging innovations that have transformed how we interact with books. From dust jackets to unique cover designs, publishers have continuously evolved how literature is presented to readers. This trivia question explores one groundbreaking packaging innovation that revolutionized access to literature in the 20th century. Test your knowledge of how book packaging has shaped literary consumption and democratized reading.

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Penguin Paperbacks with their distinctive orange covers and penguin logo
Folio Society's handcrafted slipcases with illustrated covers
Barnes & Noble's leather-bound collector's editions
Oxford University Press's India paper Bible editions