I do not think there are any hand drawn maps. From what I can tell, its Adobe fresco with digital watercolor and digital copic pens. Still looks great, but there is a lot of confusion on the process.
That makes sense. The wording made it sound like it was hand drawn on a medium like paper, not a computer. To me, hand drawn implies using physical paper and marking tools. This is digital illustration which implies hand drawn input to a computer. https://en.wikipedia.org/wiki/Digital_illustration
It is so massive he has to make affordances Epstein never had to. You can visit Lanai today for example. I took a day trip there a couple years ago. Saw the cat sanctuary. Not much else to do there. There is a little holdover company town inland from the Dole days but I didn't visit that. I'm not sure how much time Ellison even spends there. I get the sense that having these some 3k common folk holdout residents plus visitors makes it a bit less attractive than it might have seemed when he signed his name on 98% of a Hawaiian island. Seems a couple years ago he shifted his primary residency to his mansion near Mar a Lago. Bored of the plaything now, I guess.
And the font used seems very familiar so I assume the text was added during the digital manipulation phase?