NEW YORK, Aug. 27, 2013 /PRNewswire/ -- WHAT: Scholastic today released a never-before-seen video clip of J.K. Rowling to celebrate the 15 th anniversary of the U.S. publication of Harry Potter and the Sorcerer's Stone. Today is also the release date for the new trade paperback editions of all seven books in the series with new covers illustrated by #1 New York Times bestselling author/illustrator, Kazu Kibuishi. (Logo: http://photos.prnewswire.com/prnh/20100907/SCHOLASTICLOGO ) WHERE: The video can be viewed on the company blog at http://oomscholastic.com and downloaded at: http://mediaroom.scholastic.com/harrypotter. CONTACT: Nadia Almahdi, 212.343.6635, firstname.lastname@example.org Fifteen years after the first U.S. publication of J.K. Rowling's first book, Harry Potter and the Sorcerer's Stone in September 1998, there are more than 150 million Harry Potter books in print in the United States alone and the series still hits bestseller lists regularly. The seven Harry Potter books are published in over 200 territories in 74 languages and have sold more than 450 million copies worldwide. SOURCE Scholastic Inc.