National Archives had them undigitized. Amazon said it would digitize it and sell the digital copies until it recouped the investment to digitize them, and then

National Archives had them undigitized. Amazon said it would digitize it and sell the digital copies until it recouped the investment to digitize them, and then National Archives could distribute the digital copies. It's no different than if you went to the National Archives and scanned something; you would not be required to distribute the scanned version. However, apparently part of the deal was that the National Archives would get a digital copy that they could lend to researchers on-site. So this individual wants to copy those digital versions, piggybacking off Amazon's efforts. He/She's probably allowed to since they are public domain.