Stockholm, 23 October 1956 - Institutional correspondence Ernesto de Zulueta's letter to Alberto Martín-Artajo Álvarez
Madrid, 17 February 1986 - Institutional correspondence Letter from Justino Azcárate to Carmen Crespo
The New Yorker, 31 January 2022 - Drawing Modern Life. The New Yorker cover that pays hommage to MoMA