I have recently completed a book-boxing, inventory project for our oldest folios and other books. The project was funded by the William Penn Foundation through the Advanced Stewardship Program with The Conservation Center for Art and Historic Artifacts (CCAHA) in Philadelphia. It took approximately nine months to complete. We used a company called Custom Manufacturing Inc. which provided us with software and a book measuring device in order to make customized book boxes. The boxes are made out of acid free paper and come in various styles, based on size. The software is set up to measure the spine height, page width, and spine depth as well as to create labels. We also created a condition inventory for the books. The inventory allows us to know the condition of the books when boxed since they will not be seen for a long time. We are stacking the folios two to four high in order to save the page blocks from pulling on the spines and weakening the binding. Stacking flat does not apparently cause as much stress as standing on end, plus the boxes add a little support. A small number of the books (mostly vellum bound) are being conserved at the CCAHA. They are being cleaned, and the boards are being flattened where they have bowed and warped.