If the negative material isn't brittle, you might consider sandwiching the negative material
between two pieces of glass.
Using tape around the edges would cause you to loose some of the picture,
but that would be better than a total loss.
The one negative I found for the picture to show here the peeling of the film, the negative material does not LOOK brittle so that could be worth looking into someday.
I just looked thru all the images, out of the 200 or so images I only found 17 with peeling problems. Not as many as I thought I would have!










