ASTOUNDING SCIENCE FICTION STORIES Vol. 2 is a collection of 350 scifi stories from the Golden Age of Science Fiction. Here you'll find classic stories by more than 100 authors, including works by C. M. Kornbluth, Andre Norton, Frederik Pohl, Laurence Janifer, Fletcher Pratt, Henry Kuttner, Stephen Marlowe, Alan Nourse, H. Beam Piper, Walter M. Miller, Jr., Randall Garrett, Fritz Leiber, Frank Belknap Long, S. P. Meek, Raymond Jones, C. L. Moore, H.P. Lovecraft, Mack Reynolds, and many others. Second edition, with minor errors and typos corrected.
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.