Ylla, 1949, Book cover of Ylla, 1949, Le Petit Lion: photographies par Ylla, (Ed. Arts et Métiers Graphiques, Paris), Book cover, Source requested, LL/6782
Ylla, 1952, Book cover for Margaret Wise Brown & Ylla, 1952, The Duck, (New York: Harper & Brothers; London: Harvill Press), Book cover, Internet - Original source ill-defined, LL/96030