My dad found this vintage film processing envelope from Welch Photo Company of Minneapolis, MN in the treasure trove of ephemera better known as their basement. I’m not sure how old it is, but one thing I can tell tell you is developing prices have gone up a bit since then. $1.35 to develop a 36 exposure roll of 35mm film and get prints?! Looks like inflation has been hard at work. Click on the images below to see them full size.