Charts & Graphs home House Museums There are an estimated 15,000 operational house museums in the United States. View
Charts & Graphs migration Westward Ho! Giving a nineteenth-century allegorical painting a closer look. View
Charts & Graphs arts & letters Don’t Judge a Book by Its Title Match the final title with the author’s working title. View
Charts & Graphs epidemic The Heaviest Hitters Calculating the human cost of infectious diseases. View
Charts & Graphs book of nature Something from Nothing Archaic notions of spontaneous generation. View