I'm also a little irritated with some of the preaching from this era. Humans are polluting the world; tigers are endangered. We get it. Even for its time, reciting these facts is just stating the obvious. A major strength this strip had as it evolved was it encouraged readers to think for themselves. The way information is presented in these books is in direct opposition to that philosophy.
I can't help but feel while reading these that Watterson is yet to find his groove. But he would find it.
Rating(s): 8/10 ("Weirdos From Another Planet!"), 8/10 ("The Revenge of the Baby-Sat")