Pop outthis document for help with researching the 50s to present-day Canada. Googling eras can be challenging, so follow the hints provided.
CHC 2P 50s to 00s 2010 Pathfinder KB.doc
Of course, your best source of info is probably the Canadian Encyclopedia online:
If you choose to Google, make sure you are looking at CANADIAN information. Do not use Wikipedia. Try to find the most trustworthy information by checking the URL for .edu, .gov, .gc.ca, for example.