1. Murillo , B.E.Boy Blowing Bubbles. Two paintings mentioned in Velasquez and Murillo; C. B. Curtiss : Bouton, New York , 1883 ; 280 .
2. Manet , E.Soap Bubbles, oil (1867), private, see Edouard Manet; A. Jedleka : Rentsch, Zurich , 1941 ; facing 87 pp .