When Union soldiers cut off supply deliveries to the Confederacy during the Civil War, the South was not able to get paper from Northern paper mills. So, Confederate papers were printed on the back of wallpaper peeled off of parlor walls.
DID YOU KNOW? Marlon Brando hated memorizing lines so much that he posted cue cards everywhere to help him get through scenes.
He even asked for lines to be written on an actress's posterior. (That request was denied.)