Not everything that is labeled "archival-quality" really is.

Following in a short list of companies that specialize in genuine, high-quality, archival storage materials that are appropriate for collectible paper money. This is not an area to try to go cheap.

If you are outside the US, please search the web for suppliers in your area. I suggest searching for keywords such as "archival conservation supplies."

Conservation Resources International, LLC
8000-H Forbes Place
Springfield, VA 22151
USA
Phone 703-321-7730
Toll-free 800-634-6932
Fax 703-321-0629
Web site http://www.conservationresources.com/

Conservation Resources (UK) Ltd
Units 1, Pony Road
Horspath Industrial Estate
Cowley, Oxfordshire OX4 2RD
England
Phone 01-865-747755
Fax 01-865-747035
Web site: http://www.conservationresources.com/

The Hollinger Corporation
PO Box 8360
Fredericksburg, VA 22404
USA
Phone 703-898-7300
Toll-free 800-634-0491
Fax 703-898-8073
Web site: http://hollingercorp.com/

Light Impressions Corp
PO Box 22708 
Rochester, NY 14692-2708
USA
Toll-free 800-828-6216 
Fax 800-828-5539
Web site http://www.lightimpressionsdirect.com

University Products, Inc.
517 Main St
PO Box 101
Holyoke, MA 01041-0101
USA
Toll-free 800-628-1912
Fax 413-532-9281
Web Site http://www.universityproducts.com

Wei T'O Associates, Inc
PO Drawer 40
21750 Main St, Unit 27
Matteson, IL 60443-3702
USA
Phone 708-747-6660
Fax 708-747-6639
Web site  http://weito.com/