Henry Huggins and that whole Cleary world. Encyclopedia Brown. The Great Brain series.
All grade school 1st - 4th grade, probably. Tarzan probably lasted into 6th or 7th.
-Encyclopedia Brown, plus a similar series featuring three kids, which I can't remember the name of. It might have been this one , although I thought I remembered one of the kid detectives being a girl.
-anything Beverly Cleary and Judy Blume
-the Great Brain series
-part of the Chronicles of Narnia, though I think I petered out around The Horse and His Boy
-Marvel comics, mostly X-Men
-all the Archie digests I could get my hands on. My mom must have hated going to the registers at the grocery store.