London, 18 April 1980 - Institutional correspondence Nicholas Serota's letter to Roland Penrose, dated 18 April 1980
London, 1 May 1980 - Institutional correspondence Nicholas Serota's letter to Roland Penrose, dated 1 May 1980
Museo Nacional Centro de Arte Reina Sofía, Madrid, October 19, 2018 - Interview Francis Frascina in conversation with Lucy Lippard