https://en.wikipedia.org/wiki/Money
http://www.yorktonthisweek.com/entertainment/local-a-e/fun-facts-about-canadian-currency-1.1522141
https://www.tdcanadatrust.com/planning/everyday-finances-made-easy/everyday-finances-made-easy/where-your-money-goes.jsp
http://facts.randomhistory.com/money-facts.html
http://mentalfloss.com/article/62091/12-fun-facts-about-money
https://en.wikipedia.org/wiki/Banknotes_of_the_Canadian_dollar