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...
The Outer Limits: The Voyage Home
June 30, 1995
Honor Harrington: Ashes Of Victory
March 1, 2000
The Planets
November 4, 1985