Creatures of light and darkness
By: Roger Zelazny.
Contributors: Frye, Northrop.
Series: Avon science fiction
Publisher: Avon Books
Published: 1970
Place of publication: New York
Language: eng
Format: Paperback
Number of pages: 190
Notes: "Portions of the book appeared in New worlds; and If magazine."

Victoria University Library has Northrop Frye's copy with his annotations

Victoria University Library's Frye copy: 1973 printing