7.7 References

In the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. ↵

CC BY-NC-SA 3.0. Adapted from Adrienne Gruver (2016). Cartography and Visualization. https://www.e-education.psu.edu/geog486/node/1848 Courtesy of University of Texas. ↵

CC-BY Jessie Siebold (2012); used with permission http://www.myoldmaps.com/maps-from-antiquity-6200-bc/title-babylonian-world-map/ ↵

CC-BY Jessie Siebold 2012; used with permission. http://www.myoldmaps.com/maps-from-antiquity-6200-bc/109-herodotus/ ↵

Public Domain. By Isidore of Seville. File was extracted from another file: Etimologías – Mapa del Mundo Conocido.jpg, Public Domain https://commons.wikimedia.org/w/index.php?curid=164605 ↵

CC BY-NC-SA 4.0. Jessie Siebold, used with permission. http://www.myoldmaps.com/early-medieval-monographs/219-al-idrisi-world-maps/ ↵

CC BY-NC-SA 4.0. Jessie Siebold, used with permission http://www.myoldmaps.com/late-medieval-maps-1300/untitled.html ↵

CC BY-NC-SA 4.0. By anonymous Portuguese (1502) – Biblioteca Estense Universitaria, Modena, Italy, Public Domain, https://commons.wikimedia.org/w/index.php?curid=26117950 ↵

CC BY-NC-SA 4.0. Adapted from Atlas to accompany 2d report of the Railway Commissioners Ireland 1838. https://digital.ucd.ie/view/ivrla:45724 ↵

Public Domain. John Snow; Published by C.F. Cheffins, Lith, Southampton Buildings, London, England, 1854 in Snow, John. On the Mode of Communication of Cholera, 2nd Ed, John Churchill, New Burlington Street, London, England, 1855. https://commons.wikimedia.org/w/index.php?curid=2278605 ↵

CC BY-NC-SA 4.0. Steven Manson, 2015 ↵