Frontier Worlds

From Author Wars - https://authorwars.com/publications/frontier-worlds-692279.html

Overview:

Title: Frontier Worlds
Author: Scott Harrison
Year: Unpublished
ISBN-10: 9781911390015
Publisher: Snowbooks
Price: £9.99
Pages: 540
Binding: Trade Paperback
Type: Anthology
Title Reference: The Expert System's Brother
Notes: Data from Amazon API and Google Books; contents from editor's website. Although Amazon and Google give a publication date of June 1, 2017, actual copies of this book don't seem to exist (none listed for sale used, or on Goodreads or LibraryThing), and there are no post-publication mentions of the book on the internet, so most likely the announced publication never took place.