I tried and failed before I posted. It was a metal sign placed outside "Building 3" (the Spanish-style place) here: http://naccenter.arc.nasa.gov http://nacce

I tried and failed before I posted. It was a metal sign placed outside "Building 3" (the Spanish-style place) here: http://naccenter.arc.nasa.gov http://naccenter.arc.nasa.gov It's not readily accessible, and there seems to be no street-view coverage there. The photos listed nearby on google maps have a location that is far enough off to be useless.