For his new book, Swiss artists Michael Etzensperger makes double exposures of pictures of masks from books of masks from all over the world. Historically, one of the most significant uses for photography is in the reproduction of historical and cultural artefacts for books. Studies such as art history and anthropology were hugely progressed by the invention of the camera, creating a largely overlooked photographic genre that has been the on-going concern for Swiss artist Michael Etzensperger.