Old Westbury, New York, 4 May 1977 - Institutional correspondence Emilia Doyaga's letter to Nelson Rockefeller
1992-1993 - Internal museum documents Exhibition folder. Picasso: The Love and the Anguish. The Road to Guernica
May - July 1992 - Institutional correspondence Loaned works at the Museo Nacional Centro de Arte Reina Sofía in conjunction with the rearrangement of holdings between the Reina Sofía and Museo Nacional del Prado
<em>The New York Times</em>, New York, February 5, 2003, 27 - Article Maureen Dowd, “Powell Without Picasso”