Yes. That reminds me of a point. The City of Denver consumes the entire County of Denver.
Downtown Denver has the university where the Municipal League is archived. I spent a few hours there. Somebody from Sui Juris paid me to collect METRO 1313 information and the archives were in transition so the archiver just let me go to town. I recited an entire book about METRO 1313 here and so will not elaborate again.
I wonder about your model, about colonies. A UN Colony?