The catalogue was published to celebrate the thirty-yearlong (since 1987) collaboration between the Swiss artist John Armleder and Massimo De Carlo. The collaboration is recalled through the artworks John Armleder created, as well as through exhibitions and documents. The catalogue includes artworks images, installation views, documents, a conversation between the artist and the gallerist, a checklist of the illustrated artworks, a list of selected solo and group exhibitions, and a selected bibliography.