Last night something reminded me of hand-drawn treasure maps. X marks the spot. And Here be Dragons. I used to see them a lot in the sort of books I read as a kid in the sixties and seventies. Pirate maps, fantasy maps (Hyboria, Lemuria, Middle Earth…), science fiction maps (Barsoom and others), tropical archipelagos with seaplanes flying the mail routes between them. And especially the maps in Arthur Ransome’s wonderful Swallows and Amazons stories.