Fair enough, none of my old aircraft books even mention the A-12, only the SR-71, let alone the Oxcart codename or program name and as it was a CIA aircraft, unlike the SR-71 which was USAF, it is only mentioned in CIA sources. The U2 never had any codename, defacto or otherwise. I'm satisfied with the extra paragraph in the introduction that explains the association and will not seek to push the matter further but I do feel strongly that the paragraph in the intro explaining the association not be edited out in the future!