Notes: Data from SFBG. Format: 84/108/32 Design of the cover: Петър Христов — «Megachrom» Printing Run: 6,000 First edition. First printing. No ISBN as issued. The book contains a note that it is part of the "Фентъзи клуб" (Fantasy Club) (as number 16) publisher series but that is a misprinted statement or the plans changed between planning and publication: the cover does not match the rest of the old series and match all the books from the new one. Instead it is first book in a new unnumbered series (Колекция Клифърд Саймък). Cover not credited in the publication; see the notes in the cover title record for details on attribution.