Roxbury, 22 November 1955 - Institutional correspondence Alexander Calder's letter to Willem Sandberg, dated 22 November 1955
Roxbury, 12 January 1956 - Institutional correspondence Alexander Calder's letter to Willem Sandberg, dated 12 January 1956
London, 1939 - Photograph A speech by Clement Attlee, leader of the Labour Party, on the opening of the exhibition Guernica pictures by Picasso at the Whitechapel Art Gallery