I’m currently reading a book that has made reference to this Rauschenberg art: “Radical Prototypes,” Allan Kaprow and the Invention of Happenings, Judith F. Rodenbeck (2011). Parts of it are more heavily worded than I would prefer, but I can get through it.
Art in Review: ROBERT RAUSCHENBERG: ‘North African Collages and Scatole Personali, c. 1952’:
“Traveling in Europe and North Africa, Rauschenberg made collages using strips of cardboard that anticipated much of his future work.”
(Via NYT > Arts.)