Galerie A (founded by Harry Ruhé in 1976) is specialized in multiples, photography and artists’books in every possible form. From Fluxus, Wiener Aktionism and Concept Art to recent movements in art
Gallery exhibitions were organized in co-operation with, Günter Brus, Ulises Carrión, Pieter Engels, Jochen Gerz, Sol LeWitt, George Maciunas, Yoko Ono, Reiner Ruthenbeck, and many others
Editions were produced with (among others) Pieter Downsbrough, Peter Hutchinson, Willem de Ridder, Andrej Roiter, Julia Ventura, and Rob Scholte
As a guest curator exhibitions were organized for the Living Art Museum (Reykjavik), Le Bureau des Compétences (Marseille), The Centraal Museum (Utrecht), the Biennale of Prague, and for many galleries
Books by Harry Ruhé: FLUXUS, the most radical and experimental Art movement of the Sixties (1979), MULTIPLES, et cetera (1991), The Best of Wim T. Schippers (1997), 25 Fluxus Stories (1999), Stanley Brouwn. a chronology (2001), George Brecht. The Editions (2005), in collaboration with Camillo Rigo: Lucio Fontana, graphics...(2006)