After reading here, researching on the internet and browsing thru' office supply and photography stores, I finally found a product that I think will keep my negatives safe. I found a referral to this product on ( IIRC ) the government of Canada Archives website as being one of the products that they use. It is described as "archival" and is specified for negatives. Here's what it looks like : http://www.printfile.com/product.cfm?ProductID=21031085 I found it a bit dear at first, being about $0.33 per negative, but compared to the effort expended to create the negative, I guess it's not so bad. The next job is to find a binder that will hold exactly 100 of these so that they will stand flat without sagging. Any comments ?