Okay kiddo, so a long time ago in 1937, Canada made some new money that they called banknotes. These banknotes were like pieces of paper that people used to use instead of coins to buy things like toys, candy, and clothes.
But these particular banknotes were different from the ones Canada had made before. They had pretty colors on them and pictures of important people and symbols that represented Canada. One of the banknotes had a picture of a famous explorer named John Cabot, and another had a picture of a farm scene with animals and crops.
People really liked using these banknotes because they looked nicer and were easier to carry around in their pockets compared to coins. Plus, they had a special security feature on them to prevent people from making fake money - there was a tiny pattern on the paper that only showed up under a special light.
So, that's basically what the 1937 Canadian banknote series is all about - a set of new and improved pieces of paper money that were easier to use and harder to copy. Cool, huh?