Check out this excellent work by Craig Crutchfield.
Crutchfield is a designer at McGarrah Jesse who documents old signage, afraid that soon they will all be gone. To do so, he uses the negatives from Polaroid films, the part that is usually thrown away. Good concept. Nice results.
These are (for the most part) polaroid type 667 negatives or Fuji FP-3000B negatives that He’s scanned in color mode on his scanner. This setting gives the images a nice sepia tone. The junk on the outside of the photos is the paper and crust that comes natural to a 667 or FP-3000B negative.