Along with Brockmann, Crouwel and Aicher, Seitz is one of my biggest influences. His work has influenced many and is considered to be some of the best of our time. Design Observer has a great article on Seitz by Andrew Blauvelt, who also designed a book with Ryan Nelson called Peter Seitz: Designing a Life, a book featuring his work for the Walker Art Center. You can read about the making of the book on Ryan’s site and you can purchase the book from the Walker Art Center bookshop.