FILE – Kristin Preble, 13, and her mother Carol, get ready to leave the Ingomar Middle School in Franklin Park, Pa., Jan. 21, 1984. Kristin brought a briefcase with classified government documents to school as a show-and-tell project for her class. Her dad had found them in his Cleveland hotel room several years earlier and taken them home as a souvenir. Marked “Classified, Confidential, Executive” and “Property of the United States Government,” the material from the Carter White House ended up in the hands of the Reagan campaign and, eventually, the schoolgirl. (AP Photo/Keith B. Srakocic, File)

WASHINGTON (AP) — Dramas over the mishandling of classified documents at a high level of the U.S. government aren’t all new. Back in 1984, a schoolgirl in Pittsburgh showed up at her eighth grade class with a collection of classified papers — as a show-and-tell project. Thirteen-year-old Kristin Preble’s dad had found them in his Cleveland hotel room several years earlier and taken them home as a souvenir. A different sort of show-and-tell is unfolding in Washington over the mishandling of state secrets by the Trump and now Biden administrations. That episode from nearly 40 years ago stands as a reminder that other presidents also have let secure information spill.