Map showing Sussex highlighted against the other historical counties of England excluding the City of London, in 1851. File adapted from file:Yorkshire UK 1851 locator map.svg
This file was derived from:

 Yorkshire UK 1851 locator map.svg: 
Cumberland en 1851.svg:
English_ceremonial_counties_2010.svg: Nilfanion
England_counties_1851.png: MRSC
file:Yorkshire UK 1851 locator map.svg: Dr Greg
derivative work: Thomas Pusch