DataScope - A web-site devoted to statistical graphics and diagrams, multivariate data analysis, bioinformatics, drug design, etc...
An ebook on graphicacy in science, technology, and business by Paul Lewi. The book covers the history and development of data visualization methods starting with the Quipu of the Incas and going through to the sophisticated methods of multivariate data analysis...
A short introduction to multivariate analysis by Paul Lewi, starting from univariate and bivariate methods to factorial data analysis, including principal component analysis, correspondence analysis, and spectral map analysis (also referred to as log-ratio analysis).