The two vertical sides of the U in U.S. are destroyed as symbolic of the destruction of the twin towers of the World Trade Center in the September 11 aircrashes by terrorists. -- Source of annotation: Marvin or Ruth Sackner.

Edited by Robert K. Brown, who is the son of Jean Brown, the collector of Fluxus, artist books, Lettrisme, and concrete poetry. -- Source of annotation: Marvin or Ruth Sackner.

The cards are reproductions of posters advertising Naples, Italy -- Source of annotation: Marvin or Ruth Sackner.

This booklet was first published in 1959 as a handmade typographic notebook of pasted upletters and words in one size typeface. In 1962, it was published as an insert in Typographica magazine. -- Source of annotation: Marvin or Ruth Sackner.

The authors present the history of their first publication of this book in the intoduction. Steven Heller, Kit Hinrichs, April Greiman, Michael Carabetta and George Lois all contributed statements in the afterward about the influence this book, first published in 1962, had on them as graphic designers. -- Source of annotation: Marvin or Ruth Sackner.