A five hundred year old book was found in Sandy, Utah. Printed in 1493, it was one of the more common books published at the time which makes it not very rare. However, the book was publsihed using Cotton Bond Paper. Which is important because if it would have been printed on wood pulp paper it wouldn't have survived. Cotton Bond is what we use to publish RCR. I hope 500 years from now someone finds one in an attic on the moon and talks about how smart we were for using 100% cotton rag paper.