According to a personal communication to Marvin Sackner, Olbrich stated that the number of copies was Klasen's age at the time of his death. Norbert Klassen (1941-2011) taught acting and performance at the School for Experimental Design in Zurich. -- Source of annotation: Marvin or Ruth Sackner.

Norbert Klassen (1941-2011) taught acting and performance at the School for Experimental Design in Zurich. This CD displays the same images as the book. -- Source of annotation: Marvin or Ruth Sackner.

Norbert Klassen (1941-2011) taught acting and performance at the School for Experimental Design in Zurich. This CD displays the same images as the book. -- Source of annotation: Marvin or Ruth Sackner.

According to a personal communication from Jurgen Olbrich, the "Nothing"-book constituted a series of 23 books, initially the same book with blank pages, but each one treated in a different way. They are numbered but not signed (as you cannot sign nothing). They are from the same period of his work around 2002 - 2005. -- Source of annotation: Marvin or Ruth Sackner.

According to a personal communication from Jurgen Olbrich, the "Nothing" book constituted a series of 23 books, initially the same book with blank pages, but each one treated in a different way. They are numbered but not signed (as you cannot sign nothing). They are from the same period of his work around 2002 - 2005. -- Source of annotation: Marvin or Ruth Sackner.

According to a personal communication from Jurgen Olbrich, the "Nothing" book constituted a series of 23 books, initially the same book with blank pages, but each one treated in a different way. They are numbered but not signed (as you cannot sign nothing). They are from the same period of his work around 2002 - 2005. -- Source of annotation: Marvin or Ruth Sackner.

According to a personal communication from Jurgen Olbrich, the "Nothing" book constituted a series of 23 books, initially the same book with blank pages, but each one treated in a different way. They are numbered but not signed (as you cannot sign nothing). They are from the same period of his work around 2002 - 2005. -- Source of annotation: Marvin or Ruth Sackner.

The case is a modified cigarette case and the drawings are rolled within paper, printed wrappers like cigar wrappers. The drawings depict cryptic messages, images, writings, blank paper, perforations, and mathematical formulae as might be expected if this case were carried by a spy. -- Source of annotation: Marvin or Ruth Sackner.

Plastic slipcase containing periodical has shape and buttons like a man's shirt. Ths images on the loose sheets depict paintings of animals in the wild. Norbert Klassen was born March 5, 1941 and died December 1, 2011. -- Source of annotation: Marvin or Ruth Sackner.