AisleOne reader, Sean Wolcott, wrote in to tell me that Massimo Vignelli has given him permission to distribute a high-res PDF of his book, Graphic Design for Non-profit Organizations. This rare book is by Vignelli and Peter Laundry, and was published in 1980 in partnership with AIGA. The book focuses on design and best practices for non-profit organizations, but the content is a great resource in general and the teachings can be applied pretty much anywhere. There are sections on grids, typography, formats, logotypes, and color, just to name a few.
A big thank you to Massimo and Sean for making this valuable resource available to all.
You can download the PDF from here.