I have a large Spanish American War era cabinet photo, approximately 14"x 12" which became brittle and a large section  broke off tearing through the photo.  I taped the back with archival tape, but it is not enough to stabilize it.  What does the group think about gluing it to an archival quality mounting board? There are no marks on the back, so no information would be lost.   

 

Maybe frame it in a  tight enough frame it lines up and stays in place so the edges lineup.

 

Hunt