I've been making technical drawings for people since 1980. Mostly I've drawn offices, but in the last few years I have drawn waste management infrastructure, flat roofs, and now roads on housing developments. The company director who hired me a year ago is retiring and so I thought he might like this Ladybird book from 1967 which I found in a flea market a couple of weeks ago. I had to hunt on the internet to find this wrapping paper. I'm not sure how old the director is, but he's definitely younger than this book.
It's going to become increasingly difficult to find good professionals as more and more choose to take early retirement as soon as they can afford to.