Some interesting reading on VS gifts:

http://www.scientificamerican.com/article/recognizing-spatial-intel/

http://www.visualspatial.org/

http://geri.education.purdue.edu/PDF%20Files/EyeToEye.pdf

And search "visual spatial" in the Davidson resource/article database, where I found this interesting little piece on artistic giftedness (FYI, there's a nude sketch in it, in case that matters to anyone here):

http://www.growminds.com/TheArts/GTinArt.htm

...pronounced like the long vowel and first letter of the alphabet...