Edgar Rice Burroughs wrote and sold an incredible number of books, and his estate is still actively involved in managing his works : <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Edgar_Rice_Burroughs,_Inc" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Edgar_Rice_Burroughs,_Inc</a>.