Tree bark document

I recently received some questions about the care of an 1882
document printed on tree bark (suspected to be cherry wood).  The
item is described as "paper thin," tightly rolled, and brittle.  Is
humidification, as developed for paper documents, an appropriate
treatment for relaxing and unrolling tree bark?  In the matter of
storage environment and housing, would this item be treated like
paper or like a wood object?  Does anyone out there have experience
with this kind of document?

Bonnie Parr
Conservator
Illinois State Historical Library

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                  Conservation DistList Instance 9:38
                Distributed: Thursday, November 2, 1995
                        Message Id: cdl-9-38-005
                                  ***