Back in October, 2014 we spent a couple of days learning about Peanuts as tribute to the anniversary of the first publication (10/2/1950). The online resources we used then still work, so I’m passing them on to you. https://stilllearningsomethingnew.com/2014/10/02/peanuts/
And, if you haven’t seen the 2015 Peanuts Movie, I recommend it. Our family loved it!