. >> simon: there were remarkable documents-- letters signed by mark twain, sir isaac newton, charlesdocument penned by lorenzo de medici 533 years ago; an epitaph written by benjamin franklin for himself... and he wrote, "lies here food for the worms, yet the work shall not be lost." pretty good stuff. a letter written by john hancock with a real john hancock signature. and for 20th-century buffs, there was the original reading copy of f.d.r.'s 1937 inaugural address-- this one... >> franklin roosevelt: one-third of a nation, ill housed, ill clad, ill nourished... >> rosenstein: it was a rainy day. in fact, the reading copy of the speech, the document the president read from that day was waterlogged. and you can see that on the document that we seized from mr. landau. >> simon: and landau didn't just steal from historical libraries. he had taken his campaign of kindness all the way to the white house, befriending president clinton's former secretary, betty currie, who made the mistake of inviting landau to her house. landau was pretty good at making friends with people who could help