I found one old diary, probably from 1870’s, and it is full of some pieces which for looks like negatives on the papers? They could be older than diary itself. Some looks just usual negatives, but on the quite pieces of the films. Others are on some kind of paper which looks very poor/thin.
I can also make a photo of the lot in the original condition how they appears, if it could be helpful to determinate them?
My brother told me that they could be Dagguerotypes. I am just not sure, can anyone tell me something more. A photographer who wrote in the diary, and most probably made the photos is Marcus Peterson, and it seems that photos are made in Bradford, Pa.
I made on my scanner “positives” of all the negatives, so that you can easily see what is on them, but, they are all in the negative form on the papers/films.
It may be worthwhile identifying exactly what they are, as some early image technologies need to be stored in special ways. If there is an art museum or better yet a history museum with a good archive near by call and ask to speak with the photo-curator. Perhaps you can interest her or him enough to look at the images, identify them, and then suggest ways of storing them. In any case, keep them out of direct sunlight until you know exactly what they are, and how to treat them. Good luck!