Oslo, 1938 - Exhibition catalogue Catalogue of the exhibition Henri Matisse, Picasso, G. Braque, Laurens at Kunstnernes Hus, Oslo
New York, 10 July 1939 - Institutional correspondence Blanche Mahler's letter to Grace L. McCann Morley
2 May 1939 - Internal institutional documents A draft text for the invitation to the exhibition Picasso's Guernica at the Valentine Gallery, New York