This fifty-page PDF from the European Central Bank tells the history of the euro from the early 1990's to release in 2002. It includes pictures of some the currencies it replaced, and a chapter on the design of the euro banknotes.
This fun, printable handout (written specifically for kids) gives oodles of examples of nature-inspired designs.
Pro photographer reveals the secrets of starting and running a thriving photography business, that pulls in clients as regular as clockwork.