Madrid, 24 September 1936 - Institutional correspondence Letter from Josep Renau to Pablo Picasso, 24 September 1936
19 January 1940 - Internal museum documents Circulating exhibition contract for Picasso: Forty Years of His Art, New York, and the City Art Museum of St. Louis, Missouri
<em>The New York Times</em>, New York, September 28, 1969, section D, 35 - Article “Keeping Art On The Streets”