writes "Horse carriages, vinyl records, telegraphy, black and white television are all great examples of technology that held tremendous sway decades ago and eventually faded away. Other systems such as railways and telephony too are 'historical' but have advanced into current age too. I think, not being aware of the science behind such yesteryear technologies (or, its history) is not right. I feel, it would be most beneficial to encourage kids to explore old technologies and perhaps, even try simple simulations at home or school.
So, what websites or videos or other sources of information would you reach out to that teaches the basics of say, telegraphy ? Or, signalling in railways ? Etc. etc."