Marta SanmamedMarta Sanmamed is a multi-disciplinary artist whose work has been exhibited individually and in collaboration with other artists, not only in Spain but also in the USA and the rest of Europe. As well as being a writer, graphic designer and web designr, blogger and creator of TV formats, she is an enthusiastic supporter of funerary art, believing that " in order to know a city in any depth, you have to visit its market, its oldest bookshop and its cemetery." An organizer of guided tours and exclusively staged events in cemeteries, she likes to walk amongst tombs surrounded by children, as their eyes are unclouded by prejudices.

Sonja Wimmer is an award-winning illustrator whose work has been featured in books, posters, and magazines. Her books include Could It Happen to Anyone? (Honorable Mention as Best Children's Picture Book-Spanish at the 2012 International Latino Book Awards), A Night Time Story (Silver Medal Winner at the 2013 Independent Publisher Book Awards), The Word Collector (which earned her Best Illustrator at the 2011 Moonbeam Children's Book Awards and which won Second Best Children's Picture Book-English at the 2012 International Latino Book Awards), The Sky of Afghanistan (Gold Medal Winner at the 2012 Moonbeam Children's Book Awards), Story of a Cockroach (Best Cover Illustration at the 2012 International Latino Book Awards), Walking Through a World of Aromas (Second Best Children's Fiction Picture Book-English at the 2013 International Latino Book Awards), John's Whistle and The Gardener's Surprise.
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