At my late grandmother's house, there had been a water leak that wasn't discovered for a few hours and not all of the damage was seen even then. Leaning on a wall where the water leaked was a trifold photo frame containing photos taken in the 30s (I think) of my grandmother (in the middle) and her two sisters. The photos got slightly wet and it wasn't found until they were dry. They've adhered to the glass in spots. Luckily, the spots aren't on any of their faces, just the background. What's my best method for getting them out without adding too much more damage? These are so far the only copies found and there are many descendants of the three who will love to have a great reproduction. The way the frame opens is the back slides down (probably the worst to deal with in this case).