Aleksandra Mizielińska and Daniel Mizieliński are graphic designers and book authors from Poland. They are both graduates of Maciej Buszewicz’s Book Design Studio at the Warsaw Academy of Fine Arts, and founders of Hipopotam Studio. They are the authors of such books as H.O.U.S.E., What Will Become of You?, Maps, and the Welcome to Mamoko series. Their books have been published in twenty countries. They have won numerous awards for books and Internet projects, including the prestigious, international Bologna Ragazzi Award (2010) for their book What Will Become of You? Daniel is an instructor at the Warsaw Academy of Fine Arts.