Margarita del Mazo is a writer and storyteller who is greatly admired in Spain. She has almost twenty books to her name, many of which have been translated into other languages. Among them are the bestsellers Camuñas and The Flock (El rebaño in Spanish), winning the Madrid Booksellers Guild Award and the Miami Cuatrogatos Foundation Award for best illustrated children's book.

Guridi is an artist from Sevilla (Spain). Since 1995, he's worked and experimented professionally almost every aspect of design, image and advertisement.
He's published over seventy books. His work is highly valued in Spain, while also being recognized abroad. His books have been published in USA, France, Germany, Italy, Libano… He currently combines his work as teacher with his career as a children's book illustrator.

"Carlitos goes camping with the school and his partner is Luisâon, the biggest boy in his class. He has put a lot of things in his backpack just in case he needs them. As soon as he arrives, he accidentally hits Luiósn on the foot with a hammer, but with what he has brought in his backpack he can put a cast on it! Although...the cast is on the dominant foot. Then he wants to help him wash his clothes in the river, but the current carries them away... Luisâon, desperate, asks the teacher to change his partner, but Carlitos will end up proving that he is a good friend and that he is always there when he is needed." --