[Air-L] What are internet research's iconic diagrams?

[Karen Davies]

Hi Alex
You might want to include Charles Minard's map of Napoleon's disastrous Russian campaign of 1812. The graphic is notable for its representation in two dimensions of six types of data: the number of Napoleon's troops; distance; temperature; the latitude and longitude; direction of travel; and location relative to specific dates. (https://en.wikipedia.org/wiki/Charles_Joseph_Minard)
Karen Davies