Abstract The Nancy Mulnix Tweddale papers document Mulnix's leading role in Grand Rapids' acquisition of Alexander Calder’s monumental stabile, La Grande Vitesse, 1967-1969.The collection also includes information on Calder’s 1974 Calder on the Roof project, his two Flying Colors airplanes for Braniff and the annual Grand Rapids all volunteer Festival of the Arts, which continues to be held with La Grande Vitesse as its focus. Mulnix's 2002 additions to the collection document...