(Interestingly, I had a love affair years ago with Letraset, the rub on lettering used -past tense- by graphic designers, and Lisa Z. used them in her paintings. I was swooning a little from that.)
Two of the books, Ladder and Abacus I and II explore the concept of order, of the human desire to make and organize information and develop systems of organization for information.
The other set of books, 100 (see margin photo), which is 10 editions of 10 books, explores the more esoteric relationship we have with images and text. The series of books are a personal letter from the author to an unnamed recipient, with the narrative being drawn from a subject line in their written communications.