Rowling, J. K. A mixed collection comprising: a scarce Bloomsbury

How to identify first edition books and build a collection - Homes and Antiques

Why does J. K. Rowling continuously change details of the Harry Potter series? - Quora

Rowling - Harry Potter Philosophers - < 1997 - First Edition - Seller-Supplied Images - AbeBooks

Lot Detail - J.K. Rowling Twice Signed Bloomsbury Bookplate

Rowling, J. K. A mixed collection comprising: a scarce Bloomsbury promotional booklet offering various POS to help bookshops advertise the release of Harry Potter and the Chamber of Secrets, [1998]; a promotional

So you want to be a novelist? A New York literary agent, editor and author reveal how bestsellers are born, The Independent

Rowling - Set Harry Potter - AbeBooks

Rowling - Harry Potter And The Prisoner Of Azkaban

Rare Harry Potter book kept in attic auctioned for £8,000

J. K. Rowling - Wikipedia

The Library Auction - Including Rare & Collectable Harry Potter Books