On my bookshelf wish list is Logo Life by BIS publishers which chronicles the evolution of 100 of the most recognizable logos. Many of the logos today are modernized and simplified version of an early logo. The Texaxo logo is great example. The "T" within a star has been part of their logo 1909. The typeface for the T has been consistent since 1963. Over the course of a few transitions, an inversion of colors and removal of surrounding text and images has lead to the recognizable logo today.
