Michael Friendly’s Gallery of Data Visualization contains a number of great data displays (and some not too good), including a link to an interesting page on versions of Minard’s map of Napoleon’s march on Moscow. Readers of Edward Tufte’s The Visual Display of Quantitative Information will recognize much of what is here, but it was news to me that Florence Nightingale achieved at least some of her fame from her clever use of Coxcomb charts.
The site suffers from a few dead links, though. One of those that worked is the link to the CyberAtlas project. Enjoy!