The Illustrative Purposes of Old Maps

Excellent Twitter thread from Jeannette Ng talking about old maps in the context of fantasy map design. It’s a subject near and dear to my heart: fantasy maps are essentially modern maps whose design language post-dates 16th- or 17th-century mapmakers like Olaus Magnus and Joan Blaeu; Ng talks about what are essentially the non-geographic purposes of old maps, and as I understand things she is entirely correct. Start here and scroll down.