Portal:Books/DYK/8


 * ...that Harry Potter and the Deathly Hallows sold more than 11 million copies in the first twenty-four hours following its release?(Pictured)
 * ...that Guinness World Records is the best-selling copyrighted series of all-time?
 * ... that the c. 8th-century medical text Al-Risalah al-Dhahabiah, attributed to Ali al-Ridha, is also known as the "Golden Treatise"?