This catalog presents a unique selection of artist invitations from the renowned Konrad Fischer Gallery in Düsseldorf, featuring materials dating back to 1967. With a total of 164 titles, this collection highlights the major figures of minimal and conceptual art, including Sol LeWitt, Stanley Brouwn, On Kawara, Hanne Darboven, and many others. These invitations provide a rare glimpse into the gallery’s groundbreaking exhibitions and the artists who helped shape the trajectory of contemporary art.