Dedicated to the sport that has shaped the Rocky Mountain region, "Flylines" contains eight years worth of Big Sky Journal fishing. This collection is the best of the best and is sure to become one of the West's finest fly-fishing anthologies. Only 1,000 copies printed.
Various is the correct author for any book with multiple unknown authors, and is acceptable for books with multiple known authors, especially if not all are known or the list is very long (over 50).
If an editor is known, however, Various is not necessary. List the name of the editor as the primary author (with role "editor"). Contributing authors' names follow it.
Note: WorldCat is an excellent resource for finding author information and contents of anthologies.