Jerome Rothenberg wrote the introduction and Mac Low supplied notes throughout the book that documented the varied works. The handwritten poem on the last two pages of the book, "Ruth and Marvin Sackner," spells out the namesby a diastatic-chance method by drawing words from this book by placement of the names. For example, the first line of the poem is righteous number out nothing is obtained as follows. Righteous (page 18), nUmber (page 21), ouT (page 20), notHing (page 8). The page numbers correspond toplaces of the required letters in the alphabet: the words in stanza 1, from "018"; 2 from "118," etc. Mac Low has also handwritten a list of errata near the title page. -- Source of annotation: Marvin or Ruth Sackner.