( CNN ) -- Barry H. Landau is recognized as one of the foremost collectors of presidential artifacts and memorabilia , having worked with every White House since the Lyndon Johnson administration . Now police in Baltimore are accusing him and another man of stealing millions of dollars worth of historical documents from the Maryland Historical Society . Landau and Jason Savedoff are accused of stealing documents from the society 's museum library after an employee thought the pair exhibited suspicious behavior . According to a Baltimore Police Department report , the employee said he watched Savedoff take a document , conceal it in a portfolio and walk out of the library with it on Saturday . The employee then called police . The report states 60 documents were found in Savedoff 's locker near the library , some of which were signed out by Landau . The men were found to be in possession of documents signed by President Abraham Lincoln valued at $ 300,000 , along with signed commemorations of both the Statue of Liberty and the Washington Monument , each valued at $ 100,000 . The recovered documents also included several presidential inaugural ball invitations and programs with an estimated value of $ 500,000 , according to the police report . `` These are only four ( 4 ) of the ( 60 ) documents recovered from Mr. Landau and Mr. Savedoff , '' the police report stated . `` The staff of the Maryland Historical Society advised that the other 56 documents are of the same approximate value . '' Baltimore police say the FBI has also started an investigation . Maryland Historical Society President Burt Kummerow said he is proud of how the museum handled the situation and is pleased the documents have been returned . `` It would have been a huge loss because then ( the documents ) are no longer in the public record and then they 're no longer available , '' he said . Dozens of people enter the museum 's special collections unit every day to view original artifacts and conduct research . `` We 're in business to study the history of Maryland , and that 's why people come in , '' Kummerow said . `` But there are others who would love to collect important documents and own them . '' Landau is the author of `` The President 's Table : Two Hundred Years of Dining and Diplomacy . '' Earlier this month , he told CNN he has collected more than a million presidential objects . In a July 4 piece , Landau discussed how various presidents displayed the American flag and how aides went about positioning them . `` I would like to be appointed to some national position to assure that there will be a resurgence of the flag pole on every new building , and the American flag more prominently displayed on a day to day basis , '' Landau said in an interview for the `` In The Arena '' blog . CNN 's Jay Kernis contributed to this report .
Police : Barry H. Landau and Jason Savedoff had millions of dollars worth of documents . Pieces include documents signed by Abraham Lincoln and inaugural ball invitations . They also have a lot of other stuff, including the original blueprints for the White House ( which was destroyed ) as well as some old photos from when it used to be called " The Capitol " Landau has told CNN he has collected more than a million presidential objects .