The card deck procedure is the most interesting part to me. It makes the map feel less like a drawing and more like a system Jerry is observing over decades. Maybe i need to follow his rules for a map of my own.
If you're interesting in something similar with a specifically made deck, check out The Story Engine's "Deck of Worlds", which is how I was introduced to map crafting via a rule system. Another alternative is a system called "The Quiet Year" which uses a standard deck of cards and written rules for generating a world and events with an eye toward using it for collaborative story telling.
Dude, I was trying to remember the name of "The Quiet Year" for a while now! Thank you!