It is hard to stumble across footage from the 1960-1970s era, as it's hard to retrieve footage from so long ago. You couldn't upload it to iCloud, or on your laptop- VHS only became available in 1978.
Both teams are the most nitty gritty you will see, Toronto totalling 950 penalty minutes in 234 games. Chicago totalling 832 penalty minutes as well, makes for one heck of a old school hockey game.