Notes: • "First Printing: September, 1975" • "Second Printing: October, 1975"; no number line • "Cover illustration by F. Accanero" on copyright page but the cover is signed F. Accornero • Two stories have the byline of Edward Dunn Malone; two have John H. Watson, M.D. • There is an in-universe Introduction [by The Editors] and a fictitious letter from Watson to H.G. Wells • Manly W. Wellman throughout except for the Authors' Notes which uses the full middle name • Printed in the US