BALTIMORE (AP) — A man who helped a presidential memorabilia collector steal rare and valuable documents from historical archives and libraries nationwide was sentenced Friday to a year and a day in prison.

Jason Savedoff acknowledged in a plea deal earlier this year that he helped his mentor, Barry Landau, research and steal documents. Savedoff, now 25, and Landau, 64, would visit the collections and secretly put documents in hidden pockets of their jackets and overcoats.