When President Nixon had his secret Oval Office audio recording system set up in early 1971, he made it clear that the resulting record was to be for his "professional" use only, adding "Mums the whole word. I will not be transcribed."That's according to a transcription made available at Luke Nichter, a private citizen and history professor, launched the site in 2007 to compile and publish the most complete collection of "Nixon tapes" anywhere.There are .pdfs and .mp3s available online at VSL.