The legendary producer-run gallery Clara Mosch and the artists' group of the same title that gathered around it were founded in Karl-Marx-Stadt (today's Chemnitz) in 1977 and existed until 1982. The catchy name was an acronym of the contributors' last names: CLA = Carlfriedrich Claus, RA = Thomas Ranft and Dagmar Ranft-Schinke, MO = Michael Morgner, SCH = Gregor-Torsten Schade. As the founders of the first producers' gallery in the GDR and creators of diverse oeuvres, the group's artists rank among the foremost exponents of avant-garde art in East Germany. The book presents works of art, limited editions, and posters as well as photographs from the Ralf-Rainer Wasse archive in the collections of the Lindenau-Museum in Altenburg. One thematic focus is on Clara Mosch's land-art happenings and plein-air pieces. The unconventional actions attest to the group's stated objective of building greater awareness of the ongoing devastation of the local environment. Forty years after the fact, Clara Mosch's work has lost none of its relevance and urgency.