Clamshell boxes

I recently purchased some MicroClimates clamshell boxes (nicknamed "pizza
boxes" by some of you) from Custom Manufacturing, Inc.  Once I assembled
them, the boxes fit very nicely over the books: snug, but not tight, so
that the book can be put in and out without undue friction.  However, once
the book is inside the box can be difficult to open.  It seems that a
ribbon or something similar to pull on would help.  Has anyone devised a
solution for this?

Mike Widener
Archivist/Rare Books Librarian
Tarlton Law Library
University of Texas at Austin

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                  Conservation DistList Instance 7:75
                  Distributed: Monday, April 18, 1994
                        Message Id: cdl-7-75-010
                                  ***