The moon on which Canton is located, Higgins Moon's main export is mud and other such ceramic building supplies. The magistrate appears to be among the richest of the population, the rest of the population are workers, known as mudders, working in the mud fields.

A primitive border planet (moon of Heinlein) where most of the civilised townships are still governed by fringe religious sects with some bizarre religious ceremonies, teachings and practices.

Another primitive border moon of Heinlein. It's a dusty planet, but instead of it being hot, it's generally quite cold on the moon.