The book is set in the same universe as some of Kingsbury's other stories, such as "Shipwright" (1978) and the unpublished The Finger Pointing Solward.
Buku tersebut berlatar belakang alam yang sama dengan beberapa cerita Kingsbury lainnya, seperti "Shipwright" (1978) dan The Finger Pointing Solward yang tidak diterbitkan.