<HTML><FONT FACE=arial,helvetica><HTML><BODY BGCOLOR="#ffffff"><FONT BACK="#ffffff" style="BACKGROUND-COLOR: #ffffff" SIZE=2 PTSIZE=10 FAMILY="SANSSERIF" FACE="Arial" LANG="0">Consult someone in the documents section of a local museum or historical society to find out who locally does document conservation and restoration work. If the certificates are worth preserving and/or displaying (and it sounds like they are), you may want to have tape (and glue residue) removed before it further damages the paper. Aside from the recomendation to use acid-free paper for backing, matting, etc.; it is also important to use glass that protects from ultraviolet light. A knowledgeable individual can determine the kind of paper; inks used, etc. and recommend the best process for stabilizing and/or restoring.<BR>
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Carla<BR>
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Carla Klooster Bonney<BR>
Tanana, Alaska<BR>
STEPHENS, HAWLEY, WHEALDON, SHIELDS in Oregon and Washington</FONT></HTML>