GRIN - Great Images in NASA

The Great Images in NASA (GRIN) system provides a database of photos documenting NASA. Photos include: aircraft structures, aircraft design, aircraft models, wind tunnel tests, materials research, space programs, astronaut training, robotic planetary exploration and images taken by NASA spacecraft such as the Hubble Space Telescope and Mars Global Surveyor. GRIN contains many, but not all of the most popular images from NASA’s history. It also contains important historical images that you may not have seen before.

GRIN website.