There's this pretty amazing Youtube channel called Extra Credits. They're chiefly game developers and they did a bunch of very informative, concise shorts on game design and how video games work, but they have a series where they discuss history. There was a really good one they did on paper money, and since it's a topic that comes up here as well from time to time, thought you guys might enjoy this:
Episode 1
Episode 2
Episode 3
Episode 4
Episode 5
Episode 6
Clarifications and additional discussion