The Visual Display of Quantitative Information
A timeless classic in how complex information should be presented graphically.  TheStrunk & Whiteof visual design. Should occupy a place of honor--within arm's reach--of everyone  attempting to understand or depict numerical data graphically.  The design of the book is an exemplar of the principles it espouses:  elegant typography and layout, and seamless integration of lucid text and perfectly chosen graphical examples. Very Highly Recommended.