If you like this story, there’s a more modern cousin of it: in the 90s, a map ‘dealer’ named Gilbert Bland stole hundreds of centuries-old maps from museums before he was caught.
The full story is in the book “The Island of Lost Maps”:
https://www.smithsonianmag.com/arts-culture/the-island-of-lo...
https://m.alibris.com/The-Island-of-Lost-Maps-A-True-Story-o...