Hi everyone, I have been using Mylar D clear film to help protect my books. Recently I found a library supplier who sells clear polyester film. Does anyone know if the polyester film offers the same archival qualities of the Mylar D? Also, in my quest for photography books I came across this site. I have not had the time to view all the photographer's galleries, but I was impressed with the work of Micheal Crouser, Frank Ward and Hiroshi Watanabe. http://www.photoeye.com/Gallery/PhotoShowcase/homepagePSNew.cfm Thanks, Roderick