Gillian
LostCousins Star
I have a collection of letters written by my grandmother to her mother and grandfather, and also some of their replies, in roughly 1863-1867. As you can imagine, the paper is now discoloured and very fragile. My sister in law rescued the letters several years ago after the death of the aunt who looked after my grandmother and carefully put them in chronological order in a folder with ordinary plastic sleeves. They don't seem to have suffered (yet) from years preserved in this way, but I'm pretty sure the sleeves should be of a special material. Can someone advise me what this is and where I can buy a suitable folder?