Some people find book jackets, aka dust jackets or dust covers, annoying, but most librarians want to keep and protect these covers on the books that have them for several reasons.
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The dust-jacket considered
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Protecting a Dust Jacket with an Archival Polyester Sleeve // Adventures in Bookbinding
Why do books have a dust jacket?
Dirty Laundry Pile, Personification Poems in Different Voices, Paul B. Janeczko
Surprise, Surprise! Exploring Dust Jackets, Case Covers, and Endpapers in Picture Books to Support Comprehension - McNair - 2021 - The Reading Teacher - Wiley Online Library
Protecting a Dust Jacket with an Archival Polyester Sleeve // Adventures in Bookbinding
Why do books have a dust jacket?
Do it Yourself with Library Staff: How to Cover a Book at Home
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