The Glass Chain or Crystal Chain sometimes known as the "Utopian Correspondence" () was a chain letter that took place between November 1919 and December 1920. It was a correspondence of architects that formed a basis of expressionist architecture in Germany. It was initiated by Bruno Taut.
Names, pen-names, and locations of participants
Name pen-name location Wilhelm Brückman Brexbach Emden Hermann Finsterlin Prometh Stuttgart Paul Gösch Tancred Berlin Jakobus Göttel Stellarius Cologne Walter Gropius Maß Weimar Wenzel Hablik W.H. Itzehoe Hans Hansen Antischmitz Cologne Carl Krayl Anfang Tuttlingen Wassili Luckhardt Zacken Berlin Hans Luckhardt Angkor Berlin Hans Scharoun Hannes Insterburg Bruno Taut Glas Berlin Max Taut No Name Berlin
Bibliography Sharp, Dennis (1966). Modern Architecture and Expressionism. George Braziller: New York. Whyte, Iain Boyd ed. (1985). Crystal Chain Letters: Architectural Fantasies by Bruno Taut and His Circle. The MIT Press.
External links Gläserne Kette, Sammlung im Hans-Scharoun-Archiv (in German), Academy of Arts, Berlin Die gläserne Kette collection, Canadian Centre for Architecture, Montreal, Quebec, Canada (digitized items)