The "Cassina I Maestri" collection was widened in 1968 with the acquisition from Bauhaus-Archiv in Berlin of reproduction rights to some of the Bauhaus objects and in 1971 the designs of Gerrit Rietveld, Frank Lloyd Wright, and of Charles Rennie Mackintosh in 1972. The Masters collection continued with the re-issue in 1983 of furniture by Erik Gunner Asplund, the acquisition from the Frank Lloyd Wright Foundation of rights of reproduction (1986) of furniture by Frank Lloyd Wright, including the Barrel chair (1937), and, finally, in 2004 furniture by Charlotte Perriand.