Ποιος χρονολόγησε Douglas Cooper;

(Arthur William) Douglas Cooper, who also published as Douglas Lord, (20 February 1911 – 1 April 1984) was a British art historian, art critic and art collector. He mainly collected Cubist works. During World War II he worked first as an interrogator and subsequently as an investigator of the trade in stolen artworks. After the war he bought a chateau in Provence and converted it into a gallery of early cubist art.

John Richardson (Londres, 6 de febrero de 1924-12 de marzo de 2019) fue un historiador de arte británico, especialista en Pablo Picasso.