Which innovative book packaging format, introduced in 1935, made literature more affordable and accessible to the masses with its distinctive smaller size and paper covers?

The publishing industry has seen numerous innovations in book packaging and presentation over the centuries. From ancient scrolls to modern e-readers, how books are packaged and presented to readers has evolved dramatically. This trivia question focuses on a packaging innovation that revolutionized the accessibility of literature in the 20th century. Test your knowledge of how product packaging has shaped the literary landscape!

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Penguin Paperbacks
Leather-bound Folios
Hardcover Book Clubs
Library Binding Editions