(How do we know it’s 1980? Well, for one thing Peppermint Patty gets herself those Bo-Derek-in-“10” cornrows — Peanuts’ timelessness occasionally shows a crack!)
That said, The Complete Peanuts 1979-1980 includes a number of classic storylines, including the month-long sequence in which an ill Charlie Brown is hospitalized (including a particularly spooky moment when he wonders if he’s died and nobody’s told him yet), and an especially eventful trek with Snoopy, Woodstock, and the scout troop (now including a little girl bird, Harriet). And Snoopy is still trying on identities left and right, including the “world-famous surveyor,” the “world-famous census taker,” and Blackjack Snoopy, the riverboat gambler.
In other extended stories, Snoopy launches an ill-fated airline (with Lucy as the agent, Linus as the luggage handler, and Marcie as what it was still OK then to call the stewardess)… Peppermint Patty responds to being leaked upon by a ceiling by hiring a lawyer (unfortunately, she again picks Snoopy)… plus one of the great, forgotten romances of Peanuts that will startle even long-time Peanuts connoisseurs: Peppermint Patty and…“Pig-Pen”?!