Ford Images - Aviation Images and Photos
Photos and images for detailing out models,
in this case, aircraft, can be found in some unusual places.
(they have cars and trucks as well of course).
Images has saved up quite a few photos, some even in
color, of aviation they have been involved with. I especially
like the aircraft factory pictures from WWII.
I recommend you check them out. The images are also available
for purchase, but even if you browse through them, you can
still be inspired to build your next aircraft project. They
make great reference.