Many of Williamson's other works are set in the universe established in "Freehold". One is "Contact with Chaos" (2009) where humanity has first contact with alien beings. This becomes a further source of conflict between the United Nations and the Freeholders. In a review of the book, Joseph T. Major praised Williamson for refraining from heavy-handed political messages and instead creating "a diverse, varied human interplanetary society ... trying to understand an exotic, alternative nonhuman society". Other novels set in the "Freehold" universe include "Better to Beg Forgiveness..." (2007) which Mark Lardas of the "Galveston Daily News" praised as