resources.
screencaps.
home of the nutty - seasons 1-9
screencapped - seasons 1, 2, 3 (some episodes) and 9 + photoshoots
grande-caps - seasons 1, 8 (some episodes) and 9
GA fan - screencaps, promotional images, events and many others
promotional images.
daydreaming - seasons 1-7
If you know more sites, please leave a comment and they will be added here ;)