Erling Sandmo Erling Sandmo is Professor of History at the University of Oslo and the director of the National Library of Norway's Center for Historical Cartography. His most recent books are Monstrous: Sea Monsters in Maps and Literature, 141-1895 (2017) and the co-edited Circulation of Knowledge: Explorations in the History of Knowledge (2018). He is currently working on a book on Olaus Magnus. Read More Read Less