Hey there!

I'm often working with line-art in maps, hand-draw what I want to show and try to include some extra-amount of information in the design of the map. I made this a while ago (see attachment) and wondered if there ever was a time / region when / where maps were drawn with line-art only in history...

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Do you have any source material if this ever existed in real life?
Thanks for any help in advance! =)