This book is a score for performance and sound poetry. The compact disc by Fontana entitled "Il gioco delle voci" consists of three tracks of sound poems. These feature words, utterances and multiple voices. -- Source of annotation: Marvin or Ruth Sackner.

This booklet is a supplement to Dimisura No.62-63 and is stored with that issue. -- Source of annotation: Marvin or Ruth Sackner.

This pamphlet was exhibited in Visualog 2, San Luis Obispu, California, an exhibition that was curated by Karl Kempton. -- Source of annotation: Marvin or Ruth Sackner.

This book was purchased from Paula Claire at a luncheon meeting she hosted with the Sackners in London in September 2013. It provides an in depth review of the eight artist/poets works featured in this catalogue. -- Source of annotation: Marvin or Ruth Sackner.

This book is also designated Supplement No.1 of the 4th series of Altri Termini. It is a score for a "sound novel" (rather than a sound poem) first performed in 1972. The drawing adjacent to Fontana's signature is an abstract depiction of musical notation. -- Source of annotation: Marvin or Ruth Sackner.

Auction catalogue. -- Source of annotation: Marvin or Ruth Sackner.