Alfred H. Barr Jr., director of the Collections Department at the Museum of Modern Art, New York, gives Roland Penrose his opinion on art and the political element in Pablo Picasso's work in the biography on the painter being planned and compiled by Roland Penrose (Picasso: His Life and Work).

Reference in the source Archive:
GMA A35/1/1/RPA46/4.
Alfred H. Barr Jr.'s letter to Roland Penrose, dated 24 September 1954