From Gijs' list on essential Spain.
The world of Picasso's biography is a deeply contentious and well ploughed field. I should know as I worked for 5 years on the yet-to-be-published Volume 4 of John Richardson’s epic sex fest. Hiding in the glare of the Picasso craze is Pierre Cabanne’s revelatory masterpiece. Cabanne knew him, knew his circle, and was not frightened to enter Picasso’s Spanish world in exile. This is the first step to a genuine understanding of Picasso’s genius.