I use these to teach students the principles of good data visualization. He had an incredible eye for contrast, detail, and believed infographics should tell a

I use these to teach students the principles of good data visualization. He had an incredible eye for contrast, detail, and believed infographics should tell a story, not just present a lot of data. Most relevant for today, he and his team did each one of these by hand, and most of the work was in designing the visualization's structure, not playing around with code and numbers. The black and green chart about slavery is just incredible. With only 9 data points, he tells a moral story, he shares a perspective, and he educates the rest of the world on our peculiar institution. These visualizations are just incredible considering the tools they had to work with and the lack of formal data visualization science.