Quote Originally Posted by Tom Hoskinson
NASA Langley
I used to know the sites pretty well--Langley has images, but I can't find them quickly right now.

Most of the more famous ones can be found at grin (Great Images in NASA). They have some very high res scans.

http://grin.hq.nasa.gov/
http://grin.hq.nasa.gov/subject-space.html

Johnson space center (jsc) has an archive as well
http://images.jsc.nasa.gov/

I think this is the one I remember using the most. The have the 3MB scans of each image.
http://spaceflight.nasa.gov/gallery/
with this one for Apollo
http://spaceflight.nasa.gov/gallery/...llo/index.html

This site lists the different archives:
http://images.jsc.nasa.gov/luceneweb/image_sites.jsp

Matt