Storing archival materials

I am working on the storage of archival collection and the problem I
am facing is to select right boxes for the posters in the
collection. The minimum size of the posters is 30 X 40 inches. There
is no acid free cardboard or sheet available to get the boxes made.
We tried making top and bottom boxes with acid free corrugated sheet
but they are sagging. Can anyone suggest where can we find 34 X 44
inch acid free cardboard boxes or any other alternative for them.
you can also suggest any other less expensive material. Because of
large collection cost factor is another consideration.

Priya Kapoor
Art Conservator
Sanskriti Museums
Delhi
India


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                  Conservation DistList Instance 19:21
                Distributed: Wednesday, October 19, 2005
                       Message Id: cdl-19-21-013
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