Discover the little-known story of Mexican artist Jose Guadalupe Posada in this 2016 Sibert winner. -- Funny Bones tells the story of how the amusing calaveras - skeletons performing various everyday or festive activities - came to be. They are the creation of Mexican artist Jose Guadalupe 'Lupe' Posada. Author Duncan Tonatiuh brings to light the remarkable life and work of a man whose art is beloved by many but whose name has remained in obscurity.