I also store my decals in about the same way; in the original envelope, in
plastic sleeves in 3-ring binders. I actually have several binders as I try to
organize them by country i.e., USAF/USAAF, USN/USMC, German, French, British,
Japanese, Small Country AF, etc, etc (the USAF/USAAF and USN/USMC are about to
get split, though).
I have some decal sheets that are well over 30 years old (including a
Micro-Scale 48-01 that I bought new) and the ones that I've stored in this
manner look about the same as the day I bought them.
This organization system is not 100% foolproof as, sometimes decal sheets have
multiple subjects. In that case, I sort by the subject on the sheet I'm most
interested in.
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"We sleep safe in our beds because rough men stand ready
in the night to visit violence on those who would do us harm."
George Orwell
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