United States National Imagery and Mapping Agency (NIMA/NGA, USA); Center for Ancient Middle Eastern Landscapes, Institute for the Study of Ancient Cultures, University of Chicago
United States National Imagery and Mapping Agency (2016). Operational Navigation Chart: ONC C-2 Northern Scandinavia (5th Edition). United States National Imagery and Mapping Agency. https://isac-idb.uchicago.edu/id/f3d3b206-404e-420f-b4a1-b59e8b4cefcb (map)