This book is not listed in Acquaviva's Bientot les Lettristes (1946-1977). This book is not listed in Acquaviva's Bientot les Lettristes (1946-1977) although he was well aware of it. Indeed, in a personal communication to the Sackners, he pointed out that Isou considered all copies 'false' unless they were signed by him; the Sackner copy therefor is 'false.' Further, an internet search of databases revealed no copies including the Getty Research Institute Research Library Catalog that lists cours No.1 and No.2. -- Source of annotation: Marvin or Ruth Sackner.