These are some of my grandpa’s old 35mm negatives. They’re mostly from the 1950s. I’m guessing the film was just left in canisters all these years, because it’s badly curled. I’m scanning the photos, then putting the strips of negatives back onto sleeves, alternating the direction of the curl with each one. They’re still lumpy, but they’re lying kinda sorta flattish. When I’m finished, I’ll weigh them down and they should be flattened in about 30 years, give or take.