A nice memory from my childhood (early 1980's) was doing a school trip to some sort of design shop where they were CAD and getting to take home a crisply plotted rendering of the US Space Shuttle. In my memory, it was pencil not pen, but I'm not sure if that holds up.
The 'perfection' of the drawing blew my mind and, as the author points out, does have a unique character. Definitely one of the early memories that got me excited about what computers can help us do.