"In 2017, Biden accepted an honorary professor position, formally referred to as “Benjamin Franklin Presidential Practice Professor.” He also established the Penn Biden Center for Diplomacy and Global Engagement in Washington, D.C, in addition to the Biden Institute at the University of Delaware, his alma mater. "
The Penn Biden Center didn't open until Feb 2018
Joe left his VP position in Jan 2017
He had to have stored those papers somewhere for a year.
They also need to raid his Biden Institute at the Un. of Delaware.