Frank, a graduate of Harvard University, said he decided to donate his papers to the school instead of his own alma mater as a gesture of thanks to the people of southeastern Massachusetts, according to The Associated Press.
The Massachusetts Democrat said Harvard "doesn't need me."
Frank donated more than 500 boxes of papers and records to the school on Tuesday.
UMass Dartmouth library dean Terrance Burton said the donated records were a "massive treasure trove."
Frank retired from Congress at the end of his term in 2012, after three decades in office. He previously served as the chairman of the House Financial Services Committee.