The show includes portraits of both as well as a half-dozen books to evoke the libraries each brought and the impact they had. Most helpful, however, are two large touchscreens, one for each map, that allow us to access translations and summaries of many of the texts. This quickly becomes addictive, because the journey is full of surprises. Here, we read about scientific theories or descriptions based on travelers’ accounts. There, we learn how best to capture a unicorn.