I recently came across a great comic strip collection in a book entitled, "Walt Kelly's Pogo Revisited: 3 Pogo Classics in 1 Volume". Published in 1974, the volume features "Instant Pogo" (1962), "The Jack Acid Society Black Book"(1962) and "The Pogo Poop Book"(1966).
Here's a very interesting story from "The Pogo Poop Book".As usual, Walt Kelly's Pogo series makes a social commentary on a serious issue in a whimsical way. Can't wait for the classic strip to be released in hardbound collections, hopefully soon.