The Vignelli Canon (PDF)
Antonio Carusone at Aisle One:
Massimo Vignelli has published an amazing 96-page book on better understanding typography in graphic design, according to him. The book gives specific details on Vignelli’s methodology and approach as well as how he decides on paper sizes, typefaces and other tangibles. There is also a nice section of grids.
It’s a free download from Vignelli’s site, in PDF format.