Hi: The image I am attaching is of three young Navajo's at the time they entered into The Carlisle Indian School....Ca. 1880.
I had the glass negative professionally cleaned (slightly), a good copy made, and both put in a frame with archival glass. I am getting concerned that continuing to display it will make the negative disappear. I would hate to have that happen. There is no direct light hitting the frame but the room does have 3 windows in it so there is ample ambient light. The only solution I could think of was would be to drape a sheet of archival paper over the negative side....it would look odd, but it might protect the negative. The photo of the frame is included but it was hard to get a good shot due to the glass. I tend to worry, and hope someone can tell me if I am worrying unnecessarily. Thanks.
For some reason one of the photos didn't upload, but I think you can judge from what is here. Thanks..again!