The federal investigation into thefts of Theodore Roosevelt Association artifacts that led to a guilty plea this week by former director Edward Renehan Jr. turned up three more missing items.

Besides four letters previously publicized, the National Park Service Investigative Services Branch recovered two books and a letter by Roosevelt that had been consigned to auction houses by Renehan and sold.

Renehan's attorney concedes the letter belonged to the association but insists the books were owned by Renehan. Nonetheless, federal officials said the three items would be returned to the TRA.