Parece-se com a série Horseclans por Robert Adams . (1975 -)
Horseclans is a science fiction series by Robert Adams, set in a North America that had been thrown back to a medieval level by a full-scale nuclear war.
The books mainly concern the doings of the "Horseclans", a nomadic people originating from the "Sea of Grass"—the Great Plains from present-day southern Canada to central Texas, and from the Mississippi River to the Rocky Mountains, post-apocalyptically. The Horseclansmen were portrayed as fierce, noble and often gifted with telepathy, which came in handy for their dealings with their horses and "cats"—sabertoothed tigers that had been revived by scientific means in the years before the nuclear war.
Some people, including the Horseclans' founder and mentor-figure, Milo Morai, were "Undying"—effectively immortal or at least unaging and almost impossible to kill by means other than suffocation, drowning and decapitation. The Undying were also sterile, which was a source of anguish for some of them.
