Innes M. Keighren is senior lecturer in human geography at Royal Holloway, University of London. He is the author of Bringing Geography to Book: Ellen Semple and the Reception of Geographical Knowledge. Charles W. J. Withers is the Ogilvie Professor of Geography at the University of Edinburgh. He is the author or co-author of many books, including Placing the Enlightenment: Thinking Geographically about the Age of Reason. Bill Bell is professor of bibliography at Cardiff University. He is the general editor of the four-volume Edinburgh History of the Book in Scotland and is editor of The Library: The Transactions of the Bibliographical Society.