This work is recorded in the Yves Klein Archives under no. SE 241 S.



'Thanks to the sponges - living, savage material - I was able to make portraits of the readers of my monochromes who, after having seen, after having travelled in the blue of my paintings, come back totally impregnated in sensibility like the sponges' (Klein, quoted in S. Stich, Yves Klein, Ostfildern 1994, p. 165).