Pictures came before books, printing or writing, and were our first expression of stories. The Canadian artist Marie Day celebrated the power of cave art in her picture book Quennu and the Cave Bear , an imaginative recreation of how a young girl of the Stone Age conquered her fear of a ferocious cave bear by drawing him. The Stone Age makes a fitting start to an exhibition celebrating Canadian picture books, within which there are no boundaries of place or time. In chronological terms, the earliest painting in this exhibit is 42, the latest, only three years old. The earliest artefact shown here is nearly 3,000 years old, and the story of Quennu depicts a period over 20,000 years ago.