Sometimes the simplest tools are the best. This post is a tribute to the humble hunk of folded cardboard.[note]For a formal description of the same tool, see Steven K. Galbraith, Linda Hohneke, and Renate Mesmer, “Book Preservation at the Folger Shakespeare Library (1): The Use of Shelf Spacers,” Journal of Paper Conservation 11, no. 3, […]

Using cardboard spacers to fill gaps on the shelf — The Collation

Very Useful!