Battlefield map of the Battle of Barnet, 14 April 1471, showing the initial force positions
Base map:

1945 Ordnance Survey New Popular edition maps of Barnet and Monken Hadley, Crown copyrights has expired[1]Terrain details based on:

"England - Middlesex: 006", Ordnance Survey 1:10,560 - Epoch 1 (1873)
Roads derived from Maps 18 and 19 of George Carrington Gray's New Book of Roads, Sherwood, Jones, and Co., 1824.Deployment based on:

Burne, Alfred (1950) "The Battle of Barnet, April 14th, 1471" in     The Battlefields of England, London:  Methuen and Company, p. p. 110 Retrieved on 8 February 2009. 
Gravett, Christopher (2003)       Tewkesbury 1471: The last Yorkist victory, Campaign, 131, Oxford:  Osprey Publishing, p. pp. 38–39 Retrieved on 16 January 2009. ISBN:  1-84716-514-7.
Jappalang