Mia Cassany is the cofounder of Mosquito Books, a children's book publisher in Spain.

She is the author An Atlas of Imaginary Places, Great Ports of the World, and Bucketloads of Friends (all by Prestel). She lives in Barcelona, Spain.

Susie Hammer is a Polish illustrator and graphic designer based in Madrid. Susie uses simple shapes and vivid colors to create a playful, happy imaginary world. She loves drawing and painting and mixing techniques to create something different with each project.

Although she works mostly digitally, her hands are frequently stained with all the colors of the rainbow. Susie’s illustrations can be found on textiles, paper goods, and in magazines and books throughout Europe. When she is not daydreaming about dogs driving cars, Susie can be found teaching art workshops for children.