Map showing Yorkshire highlighted against the historical counties of England excluding the City of London, in 1851. Exclaves and major rivers shown.
Equirectangular map projection on WGS 84 datum, with N/S stretched 170%
Geographic limits:

West: 6.75W
East: 2.0E
North: 56.0N
South: 49.75N
This file was derived from:

 English ceremonial counties 2010.svg: 
England counties 1851.png:
English_ceremonial_counties_2010.svg: Nilfanion
England_counties_1851.png: MRSC
derivative work: Dr Greg