Benezit (2006)---volumen 14, página 575 (Walker, Anthony; Nacido en Thirsk en 1726; Fallecido el 9 de mayo de 1765 en Londres;
A Topographical map of the County of Berks..., 1761---(A. Walker Sculp.)
The British Catalogue of Printed Maps---(Walker, Anthony)
Tooley's dictionary of mapmakers---(Walker, Anthony)
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