Title: Gray Lensman
Series: Lensman, Lensman Universe
Number in Series: 4 (four), n/a
Author(s): E.E. “Doc” Smith
Cover Artist: Jack Gaughan
Language: English
Original Publisher: Fantasy Press
Originally Published: 1951
Publisher: Pyramid Books
Published: September 1974
ISBN-10: 0515031208
ISBN-13: 9780515031201
Catalog Number: V3120