Businessman and art collector Hermann Lange kept an especially close friendship with architect Mies van der Rohe and the interior designer Lilly Reich, regularly sharing family, friends and each other's company. Between 1927 and 1930, this mutually energizing association resulted in collaborative structures such as Lange's own home, the famous Haus Lange in Krefeld, and the "Crous" apartment designed for Lange's eldest daughter and her husband in Berlin--the decor and furnishings of which the couple took with them to all of their later apartments, even into the 1990s--down to the original bell plate. It is worth noting that van der Rohe did not successfully develop any contemporary furniture before or after his 13-year collaboration with Reich. This volume is the first to present many of van der Rohe's and Reich's furniture works, as well as the original decor from Haus Lange, now a museum, thus providing new insights into the fruitful collaborations of these two great designers.