Paul,
  In addition to your recommendations to packing shell shipments, I also
include the address information on a slip of white cardboard inside the
package.  Thus if the package it totally trashed and the postal service
has to open it up the identifying information is still there.
 
Charlie
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Charlie Sturm, Jr
Research Associate - Section of Invertebrate Zoology
                     Carnegie Museum of Natural History
Assistant Professor - Family Medicine
 
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