The Surprising History of the Infographic. Early iterations saved soldiers' lives, debunked myths about slavery and helped Americans settle the frontier
{"Image ImageDescription": "Playfair's trade-balance time-series chart, published in his Commercial and Political Atlas, 1786\nWilliam Playfair - Derivative of File:Playfair TimeSeries.png William Playfair's Time Series of Exports and Imports of Denmark and Norway\nWilliam Playfair's Time Series of Exports and Imports of Denmark and Norway", "Image DateTime": "2016:06:15 13:46:45", "Image Copyright": "https://en.wikipedia.org/wiki/William_Playfair#/media/File:Playfair_TimeSeries-2.png"}