found: Hirshhorn Museum and Sculpture Garden Library vertical file(from 1994 exhibition announcement: William Wilkins; painter; b. 1938, Kersey, Suffolk)
found: Getty Union list of artist names, May 6, 2005(Wilkins, William; English painter; b. 1938)
found: Yasuhisa Kohyama, William Wilkins, [2017]:t.p. (William Wilkins) final page (moved to Llandeilo, Carmarthenshire in 1940 ; studied at Swansea College of Art and then the Royal College of Art ; has works held at National Museum of Wales, and Hirshhorn Museum and Sculpture Garden in Washington D.C. ; paints in Wales and Venice)
found: William Wilkins WWW site, viewed 03 April 2018(William Wilkins ; developed a pointillist technique)