This may sound a bit silly and I hope it's not off-topic, but... I'm looking for a specific wallpaper that was present in OS X 10.6.7 (an Ansel Adams-style black-and-white landscape with the sun hidden behind some very remarkable clouds). It is no longer present in OS X Lion.
Strangely, it is also not a part of the OS X 10.6 wallpapers pack.
Is there a comprehensive resource from which old OS X wallpapers can be accessed?