I was helping my grandma clean her attic because she cannot anymore, and I came across her and my grandfathers old slides. WOW, its like a blast from the past. But sadly they have been sitting in an attic in a wooden chest in New Orleans(100+ degree weather poutside, and probaly upwards of 150 in the attic) for 40 years. Many, most in fact, are damaged. Luckily some of the better one just have some cracking at the outer edge, and its looks like its cracking on the slide, meaning the slide is still 100% there. What can I do now to save them from not getting them damaged anymore, and I plan to get some of them printed, is it safe?