edited by Constantine Petridis ; contributions by Yaëlle Biro, Herbert M. Cole, Kassim Kone, Babatunde Lawal, Constantine Petrides, Wilfried van Damme, and Susan Mullin Vogel
edited by Frederick Ilchman, Thomas Michie, C.D. Dickerson III, and Esther Bell ; with contributions by Meredith Chilton, Jeffrey Collins, Nina L. Dubin, Courtney Leigh Harris, James H. Johnson, Pamela A. Parmal, Malina Stefanovska, Susan M. Wager, and Michael Yonan
edited by Heinz Liesbrock in collaboration with Ulrike Growe ; on behalf of Kulturstiftung Ruhr, Villa Hügel ; with contributions by Anni Albers [and nine others]