This DVD knowledgebase contains 1100 (.PDF) items with an emphasis on documents produced during the Apollo/Saturn era. Full text is available for 870 documents, and abstracts with source information are included for 230 documents that are copyrighted or limited distribution materials.However, since they did not use open source or free software there is a software agreement that limits the distribution to NASA centers and NASA contractors in the US. If they had used Greenstone, or something like it, it could have been freely distributed. All that work, with so little to show for it. A shame. They should have asked someone at their library.