Thanks for that information, Steve.
The point is that you have to know what you have and then take care of them. All these early film stocks break down so if they're to last, they have to be stored properly but the flammability of nitrate and the noxious byproducts of its decomposition requires more attention.
I only have a couple of negatives from the '30s and they're not nitrate but when I bought them I had no idea what kind of stock they were. You usually can't tell from an auction listing and as a newbie, I didn't know to look. I can see nitrate being problematic for sellers. How would you even ship them if you can't legally put them in the mail?
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