NASA posts on its websites images from manned space flights. Earth from Space is a special collection of 500 images taken from the space shuttles. The collection includes several images of Flathead Lake and its surroundings. More images of the area are available from NASA's Gateway to Astronaut Photography of Earth.
To view selected NASA images of Flathead Lake, go to: http://www.flatheadmemo.com/space/index.html, the website maintained by the Flathead Lakers' retired webmaster James Conner.