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  "path": "/literature/books/rare-first-edition-books-worth-a-fortune?utm_source=RSS",
  "publishedAt": "2026-04-17T14:00:00.000Z",
  "site": "https://www.mentalfloss.com",
  "textContent": "Hidden in libraries and private collections around the world, these first editions are worth record-breaking sums.",
  "title": "7 Rare First-Edition Books That Are Worth a Fortune"
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