The cooperation of Trix and Robert Haussmann with the R thlisberger carpenters, which started in 1979, yielded numerous successful experiments in artistic and handcrafted furniture. Not comparable to furniture from the retail store, these exclusive designs were sold as a limited edition of 15 pieces each. For the first time, a publication presents the full scope of furniture that was developed in Trix and Robert Haussmann's "Allgemeine Entwurfsanstalt" for the R thlisberger Kollektion. The design objects were highly sophisticated in the planning of each detail as well as their realization and required a high level of innovation, new techniques and technical expertise. The close collaboration and good relation between manufacturer and designers were what constituted the special appeal of the finished products.