The Six Fingers of Time and five other science-fiction novellas from Galaxy magazine - editor uncredited (but possibly Marguliies, who wrote the intro?)

Introduction by Leo Margulies
"The Six Fingers of Time" by R. A. Lafferty
"A Pride of Islands" by C. C. MacApp
"Sitting Duck" by Daniel F. Galouye
"I O U" by Edward Wellen
"To Each His Own" by Jack Sharkey
"The Junkmakers" by Albert Teichner