Below are some sites we would like to suggest:

Offer Waterman
Gallery representing the Estate of Richard Allen;

Tate Collection
Richard Allen in the Tate Collection. The Collection holds the National Collection of British Art which is displayed at Tate Britain, Tate Modern, Tate Liverpool and Tate St Ives;

Victoria Art Gallery, Bath
Municipal gallery staging the 2011 Richard Allen exhibition: Richard Allen in the 60s and 70s;

Jenna Burlingham Fine Art
Gallery with an interest in Richard Allen’s work;

Website of the Government Art Collection
Works by Richard Allen in the Government Art Collection;

Website of the British Council
Works by Richard Allen owned by the British Council;

Web site of the University of Wales, Aberystwyth
Details of works by Richard Allen in the University’s collection;

Review in, April 2008
Review of Richard Allen: A Retrospective, Offer Waterman Gallery, London 2008;

Minusspace web site
Chronology of reductive art (minimalist art), 1800-today.