12 Packs: 40 ct. (480 total) Transparent Archival Bags by Celebrate It™, 5.75" x 7.34" | Michaels
100 BCW Poly Bags For Paperback Books 2 Mil Acid Free Archival Safe Storage NEW 722626902802 | eBay
Archival Quality Polyethylene Bags
Amazon.com: ClearBags Seal Top Closure Bags, Perfect Fit for 4x6 Photos, Art Prints, Pictures, Posters | Resealable Adhesive on Bag, Not Flap | Crystal Clear, Archival Safe | Pack of 25 (4"
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Polyethylene Bags for Archival Use | Magazine Bags and More