Editing Farmer in the Sky (section)

==Major themes==
The book takes up consciously many of the themes of the 19th century [[American frontier]] and [[homesteading]] - but without the moral stain of dispossessing the [[Indigenous peoples of the Americas|Native American]]s.<ref name="homesteading">{{cite journal|last=Abbott|first=Carl|date=July 2005|title=Homesteading on the Extraterrestrial Frontier|journal=Science Fiction Studies |volume=  32|issue= 2|pages=240–264|issn=0091-7729}}</ref> In particular, a character who grows the first apple tree on Ganymede and offers seeds to other colonists comes to be known as "[[Johnny Appleseed]]" (and saves his family from freezing by burning his precious tree).