Can you Remove Mold Stains From Old Photos?

Yes mold stains can be removed from photos. But why does mold form on photos? Most photos with mold are found when the photo is not framed properly.
The damage caused by mold is permanent because it eats the paper of the photo or stains the photo. One reason a lot of old framed photos have mold problems is due to placing glass on top of the photograph with no matt between. Back then most people never thought about this being a problem. But it is the major cause, glass touching the photo. Many times I had to repair photos sticking to the glass.
This is because glass sweats and the dampness or humidity gets trapped in the frame and forms mold.
Do not let the glass touch the restored photograph use a matt.