Menu background images from older versions of the game.
There are also Hi-res versions of these images.
These menu backgrounds were created by Pumpkin Studios and were used in earlier versions of the game.
They have since been replaced by a new set of Menu Backgrounds.
See also: Related forum topic.
These images (and several more) are stored in:
base.wz
texpages
bdrops
You can view the folder online on GitHub.
Learn more:
More galleries: