The Fallout TV show may have canonized an unofficial map of the post-apocalyptic United States that was drawn as part of a canceled Fallout TTRPG - by the man who would go on to direct Fallout: New Vegas.
In the first episode of the series, a weather forecaster stands in front of a map of the US. To many, that map may have simply appeared to be a map of the country's states, but eagle-eyed fans spotted that it actually appeared to divide the USA up into the 13 'Commonwealths' that were part of the series' original creation.
