Top is a sample of an OS Map from 1971: The colours, lettering and quality of line speak of something not quite as mechanical as todays versions - something made and not generated. It isn't as cold and rigid, there is clutter - a more real representation of the city in this sense.
Bottom is a map displaying age/sex within the London Boroughs in 1969. As a picture it is interesting - the shapes created by areas and also by numbers and figures, the varying density of parts across the map and the three weights of line for the three parts - Borough boundaries the heaviest, Names the medium and diagrams finest.
Made for informing, from facts and figures, something I find very pretty is made.
Both taken from 'London in Maps' by Philippa Glanville