Disappointed we aren't shown the actual, physical hand drawn maps.
And the font used seems very familiar so I assume the text was added during the digital manipulation phase?
there's more map than text on that page, so maybe something wrong with your browser
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.