I’d never heard of this book (“The Terrible Adventures of Scholastica”) and illustration series before, and yet thar’ she blows-- a book in which Escher designed his take on illuminated letters, plus other goodies. Some really cool stuff, to my mind.

More art samples:
https://www.google.com/search?q=De+vreeselijke+Avonturen+van+Scholastica+Escher&udm=2

Backstory on the book:
https://escherinhetpaleis.nl/en/about-escher/escher-today/jan-walch-and-scholastica

As a teenager, I was absolutely thunderstruck upon first discovering Escher’s work. He was one of a series of artistic geniuses that helped open my mind upon what art is, and what it could be. Decades later, I’m happy to say that I’m still grappling & flailing upon such matters. 😅

Maurits Cornelis, is that you?
https://piefed.social/c/eurographicnovels/p/1437436/maurits-cornelis-escher