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It’s been a few years but the book Code by Charles Petzold covers a number of those topics which I found interesting to learn about (but not study).

We should absolutely include the telegraph, wired and wireless. Which leads into radio…

I just picked an arbitrary starting point to illustrate the hands-on approach I would like to see.

We made and used quills in primary school, in a sort of arts and crafts/history crossover, I suppose. Didn't hold us back any, hopefully.