Agents seized items that fell primarily into two categories: (1) boxes or folders containing documents with classification markings, most of which date to the 1970s and relate to foreign trips Mr. Eiden took as a senator; and (2) notebooks containing his handwritten notes from his time as vice president relating to foreign policy and national security. Two of these notebooks had marked classified documents stored inside them. and several notebooks contained handwritten information that was itself classified.

In Mr. Biden's garage, agents found several documents with classification markings dating from Mr. Biden's time in the Senate in the 1970s and 1980s. Some of those documents relate to foreign trips Mr. Biden took as a senator, some of which he chronicled in his 2007 memoir, Promises to Keep. Agents found those Senate-era documents in a storage closet in Mr. Biden's garage.