Harrie Geelen (b. 1939) is an artistic jack-of-all-trades. He made cartoon films and commercials, adapted operas for children and illustrated the texts for his wife, the famous children’s books author Imme Dros, and others. The computer experiments for Juffrouw Kachel (Miss Stove) by Toon Tellegen set him off on a new track, and won him a Silver Slate Pencil. He was awarded a Golden Pencil in 1995 for his illustrations in Het beertje Pippeloentje by Annie M.G. Schmidt. Geelen began to write his own texts to go with his illustrations for the three books about Gijs and his dog Flop. He received a Silver Slate Pencil in 1996 for De plant van Jan and once again in 1999 for Herman het kind en de dingen. In 1995 he published Jan en het gras.