According to Official Guinness Records,
Richard Warren of Lake Forest, California, USA, has collected 2,381 books, all signed by their original authors.
Pastor Rick Warren began building his personal library in 1970 at the age of 16. Over the years as he travelled and spoke around the world, he began asking authors to autograph their books for him. Also many other authors began to send him their books autographed. The collection was verified by the bookseller Ed Postal who specialises in rare books and is a member of ABAA (Antiquarian Booksellers’ Association of America). Of 2,422 books, the total number of books accepted was 2,381.
For a complete list of 2011 records, please visit 2011 Guinness Records in United States.