Which milestone did the Guinness World Records book achieve in terms of global sales that earned it a place in its own record book?

The Guinness World Records book is itself a record-breaking product! Since its first publication in 1955, this iconic reference book has become the world's best-selling copyrighted title and has spawned a global brand. Test your knowledge about the corporate history and marketing strategies behind this fascinating product that documents human achievements and natural extremes.

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It became the most-translated non-religious book in publishing history
It was the first book to sell one million copies in a single day
It was the first reference book to generate over $1 billion in licensing revenue
It holds the record for most consecutive years on The New York Times bestseller list