Berkley Books publishes The Dune Encyclopedia, written and compiled by Dr. Willis E. McNelly and approved by Dune creator Frank Herbert (who would still contradict this book with some of his later Dune novels). The book, written from an academic point of view within the Dune universe, later goes out of print and is now considered a collectors’ item.
theLogBook.com
https://www.theLogBook.com
Earl Green is the creator, curator, and head writer of theLogBook.com.
Also of interest...
You have questions? Artoo has answers
April 15, 1979
Star Trek: Countdown
March 31, 2009
The Cylon Death Machine
February 5, 1979