Animation cels

We have come across a stash of animation cels (between 50 and
100 items) dating from 1938-1941.  We do not believe the celluloid
material to be nitrate.  At some point, someone separated the cels with
a tissue paper which has become fixed to the areas which hold paint.
The tissue paper is pulling the celluloid causing it to buckle (not
badly, but obviously).  Our plan at this point is to leave the items as
is (tissue paper intact), photograph them for reference and store the
originals in our cold storage vault.  Is this the correct protocol?

Anne Coco

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                  Conservation DistList Instance 11:93
                   Distributed: Friday, May 15, 1998
                       Message Id: cdl-11-93-009
                                  ***