For the first time, the 35 legendary box catalogues of Städtische Museum Mönchengladbach have been published as a book. Museum director Johannes Cladders developed the idea of catalogues in the form of a box with Joseph Beuys in 1967. Until 1978, Cladders worked closely with exhibiting artists to create such catalogues, which radically re-envisaged the traditional exhibition and museum publication. They embody the participatory approach of their time and instance a vision of a porous democratic work. Viewers are invited to actively participate in this artistic and institutional endeavour and engage both intellectually and physically. Researched by Susanne Rennert, designed by Petra Hollenbach, with photographs documenting all catalogues by Tobias Hohn & Stanton Taylor, and introductory essays by Susanne Rennert and Susanne Titz.